S a Lebedev contribution to informatics. S. A. Lebedev, a brief biography of scientific achievements and personal perseverance. S A Lebedev Biography

S. A. Lebedev was born on November 2, 1902 in Nizhny Novgorod. In 1921, Lebedev went to study at the Moscow State Technical University at the Faculty of Electrical Engineering, from which he graduated in 1928, becoming an electrical engineer. The results of his further work were used in the operation of domestic power plants and high-voltage transmission lines. In 1939, Lebedev defended his doctoral dissertation on the theory of artificial stability of power systems.

During the war, Lebedev was engaged in the development of homing torpedoes, developed a system for stabilizing a tank gun when aiming. For this work, Lebedev was awarded the Order of the Red Banner of Labor and the medal "For Valiant Labor in the Great Patriotic War of 1941-1945."

In 1945, Lebedev was elected a full member of the Academy of Sciences of the Ukrainian SSR and became director of the Institute of Electrical Engineering of the Academy of Sciences of the Ukrainian SSR. At the end of 1947, a model of a digital electronic computing machine (MESM) began to be created at this institute, a trial run of which took place on November 6, 1950. During the demonstration, the machine calculated the factorials of natural numbers and solved the equation of a parabola.

At the same time, Lebedev in the laboratory No. 1 of ITM and VT in Moscow worked on the creation of BESM - a high-speed electronic calculating machine. Lebedev himself developed the structure of the BESM and drew up a plan for the implementation of the project for its development, he constantly monitored the progress of this project, which was successfully completed in April 1953.

In June 1953, Lebedev was appointed director of ITM and VT, which since 1975 bears his name. On October 23, 1953, Lebedev was elected a full member of the USSR Academy of Sciences in the Department of Physical and Mathematical Sciences. He became the first academician in the specialty "counting devices". For the creation of BESM, Lebedev was awarded the Order of Lenin in 1954, and in 1956 he was awarded the title of Hero of Socialist Labor.

After the establishment in February 1955 of the Computing Center of the USSR Academy of Sciences, ITM and VT were tasked with preparing BESM for serial production. Almost all large computer centers of the country were equipped with BESM-2 machines. BESM-2 was used to carry out calculations during the launches of artificial Earth satellites and the first spacecraft with a man on board.

In order to draw attention to the scientific and technical achievements of our country in October 1955 in Darmstadt (Germany) at the International Conference on Electronic Computers, foreign specialists read Lebedev's report on BESM. This report caused a sensation: BESM turned out to be the best computer in Europe!

After the success of BESM, Lebedev began to think over the principles and architecture of the new M-20 computer, which was to become the fastest in the world. To work with this computer, many textbooks were written, and courses on studying the M-20 and programming for it were included in the curriculum of universities.

In parallel with the development and creation of universal computers, Lebedev paid great attention to work related to the defense of the country. On his initiative, in 1955, special vehicles Diana-1 and Diana-2 were developed to guide fighters to air targets. The future academician and director of ITM and VT V. S. Burtsev participated in these works, their continuation led to the creation of a whole series of computers designed to solve missile defense problems. On the basis of these machines, the country's first missile defense system was created, for which its authors, including Lebedev and Burtsev, received the Lenin Prize.

The pinnacle of Lebedev's work on the creation of universal computers was the world's most famous domestic computer BESM-6 (1967). Based on the results of work on BESM-6, Lebedev with a group of ITM and VT employees, which included the future academician V. A. Melnikov and the future chief designer of the modular conveyor processor (the best computer in Russia in the 90s) A. A. Sokolov, received the State Prize .

SA Lebedev set himself the goal of creating a computer with a speed of 100 million op/s. The work began with a computer complex for the air defense system, known as the S-300, which is still mass-produced in a modernized form. The element base worked out on machines for the S-300 was used in the development of the Elbrus 1 MVK.

S. A. Lebedev died on July 3, 1974 and did not see these new machines, just as he did not see the Elbrus 2 MVK, which was the result of many years of work by the ITM and VT team.

Another important result was the AS-6 multi-machine real-time information and computer complex, which was actively used in spacecraft flight control centers.

Throughout his life, S. A. Lebedev trained scientific personnel, educated young people by personal example. He headed the computer department at the Moscow Institute of Physics and Technology, gave lectures, and personally supervised the scientific work of many undergraduate and graduate students. For twenty years, under his leadership, 15 high-performance computers were created.

In the process of designing, commissioning and commissioning of MESM, BESM, M-20 machines, he acted as a chief designer, as a commissioning engineer, and if circumstances required, then as an installation technician. Later, with the advent of qualified specialists, Lebedev entrusted them with a significant part of the work, leaving for himself the most difficult sections related to the justification of innovations, with the theoretical justification of the structure and parameters of the computer.

The Russian Academy of Sciences established the S. A. Lebedev Prize, which is awarded once every two years to Russian scientists who have made a great contribution to the development of domestic computer technology.

In 1951, S.A. Lebedev went to work in Moscow, where he headed the laboratory at the Institute of Precision Mechanics and Computer Engineering (ITM and CT) of the USSR Academy of Sciences. From 1953 until the end of his life he was the director of this institute. At ITM and VT, Lebedev led the work on the creation of several generations of computers. Realizing how important the training of specialists for a new direction is, from 1953 until the end of his days, Lebedev headed the Department of Electronic Computers at the Moscow Institute of Physics and Technology.

Sergei Alekseevich Lebedev at ITM and VT headed the work on the creation of several generations of computers. In the early 60s, the first computer from a series of large electronic calculating machines (BESM) - BESM-1 - was created. When creating BESM-1, original scientific and design developments were applied. This computer was then the most productive machine in Europe (8-10 thousand operations per second) and one of the best in the world. Under the leadership of S.A. Lebedev, two more tube computers, BESM-2 and M-20, were created and put into production. In the 60s, semiconductor versions of the M-20 were created: BESM-3M, BESM-4, M-220 and M-222. When designing BESM-6, for the first time, the method of preliminary simulation of the operation of the operating system of a future computer was applied, which made it possible to find a number of solutions for organizing the computing process, which ensured the longevity of BESM-6, unprecedented in the history of computer technology.
In addition to fundamental developments, S.A. Lebedev performed important work on the creation of multi-machine and multi-processor systems.

The first step in the international recognition of Sergei Alekseevich's merits in the field of computer science was the awarding of him in 1996 with the Computer Pioneer Award medal for outstanding innovative work in the field of computer technology.

Academician Sergei Alekseevich Lebedev, under whose leadership the first computer on the European continent, the Small Electronic Computer (MESM), was created in Ukraine, seemed to have lived two lives. The first coincided with childhood, studies and twenty years of scientific activity in the field of energy, the second was entirely devoted to computer engineering - the creation of computers and the organization of their serial production. Between them - five years spent in Kyiv, the transition from the first life to the second.

Sergei Alekseevich Lebedev was born on November 2, 1902. in Nizhny Novgorod in a family of teachers. Impeccable honesty and diligence were placed in the family at the head of education. Strings from childhood stretched to everything that Sergei and the rest of the Lebedev children did later.

Graduated in 1928. Higher Technical School (MVTU) them. Bauman in Moscow and having received a diploma in electrical engineering, S.A. Lebedev became a teacher at Moscow State Technical University. Bauman and at the same time a junior researcher at the All-Union Electrotechnical Institute (VEI). Soon he headed a group in it, and then a laboratory of electrical networks.

In 1933 together with A.S. Zhdanov published the monograph "Stability of parallel operation of electrical systems", supplemented and republished in 1934. In the world literature at that time there was no such work, which so fully and comprehensively covered the problem of sustainability of energy systems. The differential equations of electromagnetic and electromechanical transients for synchronous machines given in the book are called the Longley-Lebedev-Zhdanov equations (Longley is an American scientist, author). They made it possible to successfully solve a number of problems of analyzing the modes of power systems and synthesizing automatic excitation controllers for synchronous machines. A year later, the VAK awarded the young scientist the title of professor. In 1939, Lebedev defended his doctoral dissertation without being a candidate of science. It was based on the theory of artificial stability of energy systems developed by him.

Sergey Alekseevich worked at VEI for almost twenty years. For the last ten years he has been in charge of the automation department. Before the war, VEI was one of the most famous research institutes, where a number of world-famous scientists worked. The Department of Automation dealt with the problem of control of energy systems (S.A. Lebedev, P.S. Zhdanov, A.A. Grodsky), the theory of automatic control (L.S. Goldfarb, D.I. Maryanovsky, V.V. Solodovnikov), new means of automation (D.V. Svecharnik), telemechanics (A.V. Mikhailov) and was a real constellation of young talents. A remarkable feature of the institute was the presence in it of a sufficiently powerful production base, due to which the results of research were quickly introduced into practice.

Malinovsky Boris Nikolayevich, a well-known scientist in Ukraine and abroad in the field of the theory of design and application of digital control machines, managed to find one of the VEI veterans - Professor, Doctor of Technical Sciences D.V. Svecharnik, who shared his memories of Sergei Alekseevich.

“The war was coming. The department switched to defense topics. Sergey Alekseevich and I have begun work - for the first time directly jointly - on the creation of combat weapons homing to a target that emits or reflects radiation. In September 1941, Sergei Alekseevich was evacuated from VEI to Sverdlovsk. I had to deal more with the creation of a homing head (then the so-called extrafocal heads were first developed and then patented), Sergey Alekseevich - with aerodynamics and the dynamics of an aircraft (he developed a four-wing system with autonomous control over independent coordinates) ... In 1944 VEI returned to Moscow, and purge models of our aircraft began in Zhukovsky, near Moscow. The results were discussed with Academicians Khristianovich and Dorodnitsyn. Together already in 1945-1946. conducted full-scale tests in the Black Sea. And although both of us were equally listed as the chief designers of "guided weapons", Sergei Alekseevich instructed me to report to the commission of the Council of Ministers of the USSR. He himself only answered questions "in his part." One of the members of the commission attached a “marbled”, outwardly completely dark light bulb to his chest, and no matter how he squatted, he jumped to the side, a blunt-nosed shark with mutually perpendicular fins kept homing in on his chest - it was impressive. Air Marshal Zhavoronkov gave a high appraisal of our work and told us what it takes for aviation to hit not only a snarling warship, but even a modest barge with conventional bombs. And when in October 1946, during full-scale tests in Evpatoria, where I was with Sergey Alekseevich, a direct hit was received on a barge, we silently embraced ...

So he was - a talented scientist and a modest person, a patient educator and a strict leader, prudent and courageous in actions, tolerant of mistakes, but hating meanness and treason.

During the war years, while in Sverdlovsk, S.A. Lebedev, in a surprisingly short time, developed a system for stabilizing a tank gun while aiming, which was quickly put into service. No one knows how many tankers during the war it saved the life of, allowing you to aim and fire from a gun without stopping the car, which made the tank less vulnerable. For work in the field of military equipment S.A. Lebedev was awarded the Order of the Red Banner of Labor and the medal "For Valiant Labor in the Great Patriotic War of 1941-1945."

Almost every work of a scientist in the field of energy was accompanied by the creation of computing tools to perform calculations in the process of its implementation or to include them in the developed devices. So, to calculate a thousand-kilometer heavy-duty (9600 MW) transmission line Kuibyshev hydroelectric complex - Moscow, it was necessary to create a highly automated installation of powerful inductances and capacitances that implements the mathematical model of the line. This grand structure was installed in one of the buildings on Nogina Square in Moscow. The second copy of the model was assembled in Sverdlovsk. The use of the model, and in essence, a specialized computing device, made it possible to quickly and efficiently carry out the necessary calculations and draw up a design assignment for a unique power transmission line.

For the stabilization system of a tank gun and an automatic homing device for an aircraft torpedo, it was necessary to develop analog computing elements that perform basic arithmetic operations, as well as differentiation and integration. Developing this direction, Lebedev in 1945 created the country's first electronic analog computer for solving systems of ordinary differential equations, which are often encountered in problems related to energy.

In the book “Alexander Alexandrovich Bogomolets. Memoirs of contemporaries ”(Kyiv. 1982) Academician M.A. Lavrentiev, wrote: “Lebedev, while still in Moscow, began to theoretically deal with this issue (the creation of electronic calculating machines) and, upon arrival in Kyiv, began to create separate models. In Feofania (near Kiev) there was a two-story house half-burnt by the Nazis. This house was restored, and the first laboratory in the Soviet Union for the creation of the first electronic calculating machine in the country was located there.

This statement is the only written evidence that speaks of the time when S.A. Lebedev's idea of ​​building a digital computer. Sam S.A. Lebedev never commented on this in his scientific works. Nevertheless, according to the recollections of people close to him, the idea of ​​building a digital electronic computer using the binary number system really came to him in the pre-war years.

The use of the binary number system made it possible to use the widest range of physical devices and phenomena, including vacuum tubes, as the element base of computing facilities. On the other hand, the method of performing arithmetic operations in the binary number system and the analysis of the features of numerical methods for solving mathematical problems became the theoretical basis for building a digital computer, which captivated the forty-year-old scientist, and later determined his second creative life. Experience of S.A. Lebedev in the energy sector, including the creation of complex and very cumbersome automated simulation facilities, also helped S.A. Lebedev to believe in the necessity and possibility of building electronic giants that were completely unusual for those times, such as the first computers were.

The war delayed, but did not affect the scientist's plan to create a digital computer. Fateful was the move to Kyiv. Being elected in 1945 as a full member of the Academy of Sciences of Ukraine S.A. Lebedev in 1946 became the director of the Institute of Power Engineering of the Academy of Sciences of Ukraine.

Having received at his disposal an institute where two incompatible scientific directions developed - electrical and thermal engineering. A year later, at the suggestion of S.A. Lebedev Institute is divided into two: electrical engineering and thermal power engineering. He becomes director of the Institute of Electrical Engineering. This frees him from worries about the implementation of heat engineering topics alien to him. Together with the laboratory of d.t.s. L.V. Tsukernika S.A. Lebedev initially continued research on the management of power systems and for this work they were awarded the State Prize. The next step was the creation of our own modeling and regulation laboratory. Since the autumn of 1948, S.A. Lebedev focused the laboratory on computer technology and switched completely to the implementation of the idea of ​​creating a computer. “The principle of operation of a high-speed machine is the principle of an adding machine,” he later said, speaking two years later at the closed academic council of the Institute of Electrical Engineering and the Institute of Thermal Power Engineering of the Academy of Sciences of Ukraine. The "arithmometer principle" was the original, and since the electronic adding machine had to be controlled, the principles of program control and automatic program execution were added.

S. A. Lebedev with colleagues

At the first stage of work, the new brainchild of S.A. Lebedev was called the Electronic Computing Machine Model (MESM). As conceived by the scientist, the principles of building a new machine had to be tested on a model, and only then proceed to its creation.

October-December 1948. S.A. Lebedev organized a seminar for a general acquaintance with the problems of digital computing technology for the employees of his laboratory, and in January - March 1949, the principles of constructing MESM were discussed at the seminar. M.A. Lavrentiev, B.V. Gnedenko, A.Yu. Ishlinsky, A.A. Kharkevich and laboratory staff S.A. Lebedev.

Lebedev's first car

The main ideas of S.A. Lebedev, which he proposed for the implementation of MESM, boiled down to the following:

• representation of all information in the binary alphabet and its processing in the binary number system;
• program principle of control and placement of programs in the memory of the machine;
• the operational-address principle of constructing commands in programs and the possibility of the current change of commands (to perform cyclic actions) by operations on them in the same way as on numbers;
• a hierarchical system of machine actions (provided by the internal language), consisting of basic operations controlled by a circuit method, and compound procedures implemented according to standard subroutines;
• construction of basic operations based on elementary operations performed simultaneously on all digits of words;
• hierarchical organization of storage devices using multifunctional memory levels;
• the use of both central and local control of the computing process;
• element base - flip-flops and logic gates on vacuum tubes, external storage device - on a magnetic drum (the use of a magnetic drum to store large amounts of information was one of the first (and possibly the first) in the world).

During the discussion at the seminar, these ideas were developed and concretized.

In 1949, the main technical solutions were obtained in the laboratory of S. A. Lebedev: the element base of the machine was developed, its block diagram, documentation for the main devices. Subsequent events related to the creation of the layout and its transformation into the Small Electronic Computing Machine developed at a rapid pace.

On November 6, 1950, a test run of the layout took place and the simplest test problems were solved. January 4, 1951 the current model was demonstrated to the admission committee of the Academy of Sciences of Ukraine. At the same time, the first calculations were performed - the calculation of the sum of the odd series of the factorial of a number, raising to a power. The alteration of the layout into the Small Electronic Computing Machine was started.

On August 1, 1951, Government Decree No. 2759-132 was issued, obliging the MESM to be put into operation in the 4th quarter of 1951. On November 7, 1951, the conversion of the layout into the Small Electronic Computer was completed, it was tested as a whole before launch. On December 25, 1951, the Government Commission accepted the MESM into regular operation.

The brainchild of S. A. Lebedev - MESM

Speaking at the Academic Council of the Institute of Cybernetics of the Academy of Sciences of Ukraine, dedicated to the 25th anniversary of the creation of MESM, Glushkov V.M. assessed the importance of MESM for the development of computer technology in Ukraine and in the country: “Regardless of foreign scientists, S.A. Lebedev developed the principles of building a computer with a program stored in memory. Under his leadership, the first computer in continental Europe was created, important scientific and technical problems were solved in a short time, which laid the foundation for the Soviet school of programming. Description MESM became the first textbook in the country on computer technology. MESM was the prototype of the BESM Large Electronic Computing Machine; laboratory S.A. Lebedev became the organizational embryo of the Computing Center of the Academy of Sciences of Ukraine, and later the Institute of Cybernetics of the Academy of Sciences of Ukraine.

Already after the move, S.A. Lebedev to Moscow in Kyiv, according to his idea, another computer was created - this time specialized - for solving systems of linear algebraic equations (chief designer Z.L. Rabinovich).

The creation of MESM in such a short period of time - three years - in the conditions of the first years of the post-war period was a real feat of S.A. Lebedev and a small team led by him.

There were more than enough difficulties, since the development of the MESM was started as an initiative work without any government decrees. For the first two years, it was carried out at the expense of the meager budget of the Institute of Electrical Engineering.

A particularly difficult situation with the material support of work developed in the second half of 1950. Seeing what a difficult situation Lebedev S.A. got into, M.A. Lavrentiev wrote a letter to I.V. Stalin about the need to accelerate research in the field of computer technology. He, a mathematician, was appointed director of the Institute of Fine Mechanics and Computer Science of the USSR Academy of Sciences, established in Moscow in 1948, and for the laboratory of S.A. Lebedev was allocated a substantial amount of money.

Lavrentiev decided to use the experience of Lebedev, who clearly demonstrated his creative abilities, while developing MESM, Sergey Alekseevich was already thinking and drawing diagrams and timing diagrams for BESM. In March 1951 Lavrentiev created laboratory No. 1 at the institute and invited Lebedev to head it part-time. So BESM, conceived and modeled in Kyiv, began to be developed in Moscow.

Lebedev brought from Kyiv a BESM project he had completed with his own hands.

The creation of BESM was an extremely important step in the development of domestic computer technology. BESM became the first domestic high-speed computer, and for a long time remained the most productive machine in Europe and one of the best in the world. In BESM, the ideas of S.A. Lebedev in the field of structural implementation of information processing methods. In particular, it was a completely parallel machine, it had a developed system of commands, a form of representation of floating-point numbers, a multi-stage organization of memory, and other important features that allowed further development of the structure of the machine and its technical components. It became the basic prototype of the following machines and was operated for a long time at the Computing Center of the Academy of Sciences of the USSR, providing the solution of many very important tasks that previously, due to their complexity, could not be solved in a practically expedient time frame.

When creating BESM S.A. Lebedev formed a workable team of employees and founded a scientific school that determined the development of domestic computer technology for a long time.

Both MESM and BESM were made in one copy. Serial production of machines developed at ITM and VT of the Academy of Sciences of the USSR began in 1958.

Each of the subsequent computers created under the direction of S.A. Lebedev, reflected the results of the scientific work of the ITM and VT team of the Academy of Sciences of the USSR obtained by that time and became a significant milestone in the domestic computer industry.

We will show this on the fundamental features of Lebedev's serial computers of the late 50s, 60s and 70s.

1958 BESM2: RAM based on ferrite cores; widespread use of semiconductor diodes; advanced (small block) design, floating pin connectors; Hundreds of thousands of problems were solved on BESM2 machines - purely theoretical, applied mathematics, engineering, etc. In particular, the flight trajectory of the rocket that delivered the pennant of the Soviet Union to the Moon was calculated.

1958 Computer M2O: for the first time in domestic practice, automatic address modification was applied; combining the work of AU and fetching commands from memory; used buffer memory for arrays printed. Combining printing with an invoice; synchronous transmission of information in logical circuits; tape drive with quick start and stop; for M20, one of the first operating systems IS2 was developed (Institute of Applied Mathematics, USSR Academy of Sciences).

1965 BESM4: semiconductor elements were used; software compatibility with the M20 computer. BESM4 machines were used to solve various problems in computer centers, scientific laboratories for the automation of a physical experiment, etc.

1967 BESM6: a system of elements with wide logical capabilities and paraphase synchronization; deep combination of command execution based on asynchronous pipeline structure; use of associative ultra-fast buffer memory; the first use of virtual memory in domestic machines; use of the "store" method of accessing memory; combined with the account parallel exchange of arrays with two magnetic drums and four magnetic tapes; operating system with multi-programming mode of operation.

The Commission notes with satisfaction that BESM6 has the main structural features of modern high-performance machines that allow it to be used in multiprogramming and time-sharing modes: an interrupt system, a memory protection device, a command protection device, an address assignment device, and a store organization of command execution.

BESM6 computers were produced for 17 years and were used in computer centers and many branches of the national economy.

For the development and implementation of the BESM6 machine S.A. Lebedev, V.A. Melnikov, L.N. Korolev, L.A. Zak, V.N. Laut, A.A. Sokolov, V.I. Smirnov, A.N. Tomilin, M.V. Tyapkin were awarded the State Prize.

Computer technology from the first days of its appearance began to be used for military purposes. S.A. Lebedev was the chief designer of the computing facilities of the country's anti-missile defense system (ABM).

The importance of work in the field of missile defense, which at that time was far ahead of the level of foreign military equipment, led to the fact that the name of Lebedev as the chief designer of missile defense computing facilities was classified. Only in 1990 - 16 years after his death - his participation in the creation of the country's first missile defense systems was mentioned in the newspaper "Soviet Russia" dated August 5 (article by G.V. Kisunko "Money for Defense").

It can be said with confidence that if BESM 2, M 20, BESM 6, installed in many computer centers, ensured the rapid development of scientific research and the solution of the most complex problems of scientific and technological progress in the postwar years, then specialized computers developed under the leadership of S.A. . Lebedev, became the basis of powerful computing systems in missile defense systems. The results obtained in those years were achieved abroad only a few years later.

Just a year later, at the created test site (experimental missile defense complex - the so-called system A west of Lake Balkhash), the first locator was put into operation, successfully recording all training missile launches in the country. And two years later, anti-missiles began to be fired with the full composition of system A. Its components were radars unprecedented for those years with a powerful energy potential, an automated control system based on the high-speed M40, high-speed and maneuverable anti-missiles with the most accurate guidance, electronics with digital coding.

The creators of the first missile defense system received the Lenin Prize. Among them were G.V. Kisunko, S.A. Lebedev and B.C. Burtsev.

In the 1950s and 1960s, several directions were effectively developed in the field of domestic computer technology. The most famous were the scientific schools of S.A. Lebedeva, V.M. Glushkova, I.S. Brook and B.I. Rameev ("Penza School"). A number of prominent scientists A.A. Lyapunov, M.R. Shura-Bura, A.P. Ershov, V.M. Kurochin, E.L. Yushchenko and others.

Lebedev's scientific school arose as a result of the great work of the scientist and his creative associates in the creation of ultra-high-speed universal and specialized computers - the most complex classes of computer technology.

The emergence of a new scientific direction and, moreover, a scientific school is a complex creative process. Books, articles and reports by S.A. Lebedev served as the foundation on which the scientific school of S.A. Lebedev and his authority grew.

A scientific school is created when a scientist, its founder, has students who grow into scientists who are able to conduct independent research, continuing the work, traditions, ideas of the teacher. Lebedev's "chicks", raised at ITM and VT of the Academy of Sciences of the USSR, turned out to be worthy students, became prominent scientists.

Dozens, if not hundreds of specialists have gone through the Lebedev school and remain faithful to it. Some of them are already retired, some worked for V.A. Melnikova (L.N. Korolev, V.P. Ivannikov, L.N. Tomilin and others), V.S. Burtseva (I.K. Khailov, V.I. Perekatov, V.B. Fedorov, V.P. Torchigin, Yu.N. Nikolskaya, etc.). The majority continued to work at ITM and VT Academy of Sciences of the USSR. S.A. Lebedev Academy of Sciences (G.G. Ryabov, V.I. Ryzhov, V.V. Bardizh, P.P. Golovistikov, V.L. Laut, A.S. Fedorov, A.A. Sokolov, M.V. Tyapkin, V.V. .I. Smirnov and others).

In the 60s, a discussion began in the USSR related to the transition to third-generation computers (on integrated circuits). Most of the participants in the discussion agreed that a number (family) of compatible (software and hardware) computers should be created. But that was where the agreement ended.

S.A. Lebedev, who proved for many years the correctness of his ideas and the ability to predict the prospects for the development of computer technology, proposed creating a number of small and medium-sized computers and independently developing supercomputers (due to large differences in the structure, architecture, and technology of supercomputers).

Lebedev, Glushkov and their supporters believed that the accumulated experience and the significant production potential created by that time made it possible to cooperate with the main manufacturers of computer equipment in Western Europe in order to jointly move on to the development of fourth-generation computers earlier than the Americans did.

Opponents of S.A. Lebedev was offered to go a different way - to repeat the American third-generation IBM360 system created a few years ago. Among them there were no scientists of such weight as Lebedev and his supporters, but there were people representing the authorities, and therefore making decisions. A government decree was adopted to create a Unified Computer System (ES COMPUTER) by analogy with the IBM360 family of machines. The Lebedev Institute was not mentioned in the resolution.

Sergei Alekseevich, having learned that the decision to repeat the IBM360 system was finally made, went to an appointment with the Minister of Radio Industry. To do this, he had to get out of bed. He had pneumonia, he was lying with a high fever. The visit ended in vain. After that, the disease intensified. Sometimes there was hope for recovery, but not for long. The strongest organism of the scientist, undermined for years by the most intense, not knowing the measure of labor, could not stand it.

He got worse and worse. The Order of Lenin, which he was awarded on his 70th birthday, was handed to him at home, he almost never got out of bed. It is unlikely that he was pleased with the reward if the cause suffered, to which twenty-five of the most fruitful years were given ...

The forecast of the brilliant scientist S.A. Lebedeva justified himself. Both in the United States and throughout the world, they subsequently followed the path that he proposed: on the one hand, supercomputers are being created, and on the other, a number of less powerful computers oriented to various applications - personal, specialized, etc.

Enormous funds were spent on the development of ES computers. Copying the IBM 360 was difficult, with multiple shifts in the target dates, and required a huge effort from the developers. Of course, there was also a benefit - they repeated an outdated, but still very complex system, learned a lot, had to master a new technology for manufacturing computers, develop an extensive range of peripheral devices, and the skills of "Sovietization" of foreign developments appeared. And yet, at the same time, they “boiled in their own cauldron”, with difficulty getting documentation for the IBM 360 system. If you think about the damage that was inflicted on domestic computer technology, the country, and pan-European interests, then it is, of course, incomparably higher in relation to the modest results obtained .

Sergei Alekseevich Lebedev died on June 3, 1974. He is buried at the Novodevichy Cemetery in Moscow.

Merits of S.A. Lebedev before the Ukrainian science are not forgotten. The street in Feofania, where there is a two-story house that housed the MESM, is named after S.A. Lebedev. On the building where the Institute of Electrical Engineering of the Academy of Sciences of Ukraine was located, the director of which was S.A. Lebedev, a memorial plaque was installed.

S.A. A monument was erected to Lebedev on the territory of the Kyiv Polytechnic Institute "KPI". The opening of the monument, which took place on November 12, 2002, was timed to coincide with the 100th anniversary of the birth of the scientist.

The opening ceremony was attended by I. V. Sergienko, A. V. Palagin, Lebedev's daughters - Natalia and Ekaterina, B. E. Paton, M. Z. Zgurovsky and the author of the monument - sculptor A. P. Skoblikov.

The following words are carved on the pedestal of the monument: “To the creator of the first computing machine in continental Europe from Kyiv Polytechnics. Sergei Alekseevich Lebedev. And the direct speech of the scientist: “Electronic computing will be no less, if not more important than any other technology. 1948".

The article is dedicated to the 105th anniversary of Academician S.A. Lebedev - an outstanding scientist and engineer, the founder of domestic electronic computing technology, the creator of 15 types of computers, including the legendary BESM series.

Computers and digital technology have become so firmly established in our lives that they are now taken for granted. And few people ask themselves the questions by whom and with what work the path to modern information technologies was paved. Unfortunately, over the years of artificially created informational closeness of the state, a stereotype of national computer nihilism has developed in the minds of many people. Meanwhile, knowing the facts of the development of science and technology firsthand, we can safely talk about the presence of deep roots and traditions of domestic computer engineering, we had world-class achievements in this area.

The story about the contribution of Academician Sergei Alekseevich Lebedev to the development of electronics and computer technology both in our country and in the world is intended to help us understand the true extent of the participation of our compatriots in world computer history.

According to the President of the Russian Academy of Sciences Academician Yu.S. Osipov, unique developments by S.A. Lebedev "determined the high road of world computer engineering for several decades to come." It was Academician Lebedev who, in the difficult post-war years, created the first domestic computer and subsequent more and more productive computers. The appearance of electronic computers became a scientific and technological revolution that radically changed the development of society.

Scientific feat S.A. Lebedev

Any significant scientific discovery is preceded by years of tireless search and work. After graduating from Moscow State Technical University. Bauman in 1928, Sergei Alekseevich devoted himself to work in the field of electrical engineering. The results of his work were used in the commissioning of the first domestic power plants and high-voltage transmission lines. Already in 1939, S.A. Lebedev, bypassing the Ph.D., defended his doctoral dissertation on the theory of artificial stability of energy systems.

After the German attack on the Soviet Union, the future academician volunteered for the militia, but due to the strategic importance of the work performed, he was not allowed to go to the front. Lebedev continued research and during the war he developed a torpedo homing to emitting or reflecting radiation targets, as well as an automatic homing system for an aircraft torpedo and a system for stabilizing a tank gun when aiming.

The creation of such systems required a colossal amount of computation. It was this circumstance that led the scientist to understand the need to automate computational processes. In 1945, S. A. Lebedev created the first analog computer for solving a system of ordinary differential equations. Sergey Alekseevich had really great courage and believed in himself. At the age of 45, already a well-known scientist, he took up a completely new direction in the creation of computer technology.

Sergey Alekseevich’s enthusiasm for the new business was so all-consuming that when in 1948 he was invited to speak at the Paris International Conference on Large Electric Power Systems, he, having prepared the report “Artificial Stability of Synchronous Machines”, entrusted another person to read this work. But he did not go to the conference himself - he was so immersed in the development of the principles of operation of an electronic calculating machine.

As is known, von Neumann developed the principles of computer engineering and electronic accounting abroad, and the classical architecture of a computer is called “von Neumann”. Lebedev's scientific feat lies in the fact that in the conditions of the information isolation of those years, Sergei Alekseevich came to the same conclusions as von Neumann, but six months earlier.

The developed theoretical calculations allowed Sergei Alekseevich to move on to practical work. The first significant result was the Small Electronic Computing Machine (MESM), which was put into operation by the commission in 1951, and in 1952 important scientific and technical problems in the field of thermonuclear processes, space flights, rocket technology, long-range transmission lines and other In Kyiv, in the National Academy of Sciences of Ukraine, where the MESM was created, the design documentation and folders with materials on the first domestic computer were preserved, most of which were compiled by S.A. Lebedev. Somebody's hand more than 50 years ago, it was written on them: "Keep forever."

Folder with materials about the first domestic computer Structural scheme of BESM development

Sergei Alekseevich Lebedev

BESM-6

Medal "Computer Pioneer Award" for outstanding pioneering work in the field of computer technology

In parallel with the final stage of work on the MESM in 1950, the development of the first Large (later renamed High-Speed) Electronic Computing Machine was started. The development of BESM was already carried out in Moscow, in the ITMiVT laboratory, which was headed by S.A. Lebedev. And here his scientific talent as a practical designer manifested itself.

In those years, there was no own element base, the necessary structures for computing units, and cooling systems. We had to manufacture chassis and stands ourselves, drill and rivet, mount and debug various versions of triggers, adder counters, and check them for reliability in operation.

Sergey Alekseevich was always at the center of these works, often soldering the circuits with a soldering iron in his hands, making the necessary changes to them, correcting the problems found. He accurately found failed radio tubes and parts. After a busy, busy day, S. A. Lebedev sat at the console or oscilloscope until 3-4 in the morning, debugging the machine.

Intense intellectual work and an overloaded schedule, however, did not prevent the scientist from remaining calm and reasonable in any situation. When a local fire broke out at the institute on the first floor, where the BESM, already assembled and prepared for state tests, was located, Sergey Alekseevich, without wasting a second, resolutely said: “Turn off all the electricity.” The car was not damaged. Perhaps the determination of its creator saved that first copy of the legendary computer.

S. A. Lebedev combined the talent of a scientist-researcher with the remarkable abilities of an organizer and inspirer of work. He knew how to pick up a strong team, captivate it with work and concentrate all efforts to solve a common problem. In the 1950s, when the country, exhausted by the war, did not have enough scientific personnel, Lebedev made a bet on the youth - and he was not mistaken. He gathered around him talented students - graduates and graduates of MSTU, MEPhI, MIPT. For students of S.A. Lebedev, the development of BESM became the start of scientific activity, later many of them became famous scientists and academicians.

In the museum of ITMiVT, a half of a notebook sheet from the manuscript of Sergei Alekseevich has been preserved - it contains a detailed structural diagram and a calendar plan for the development of BESM. It is surprising that the whole machine, which in reality occupied 100 square meters. m, fit on a small piece of paper. But this required a huge effort of intellectual and physical strength - the justification and theoretical calculations on BESM took dozens of thick notebooks from Lebedev.

As a result, the colossal work was rewarded with victory - the conceived computer was created. The first launch of the BESM took place in the fall of 1952, and it passed state tests in 1953. In the same year, Lebedev became director of the Institute of Fine Mechanics and Computer Engineering and a full member of the USSR Academy of Sciences in the Department of Physical and Mathematical Sciences. He became the first academician in the specialty "counting devices".

A significant fact of history - presented by S. A. Lebedev in October 1955 in Darmstadt (Germany) at the International Conference on Electronic Computing Machines, a report on our achievements made a sensation - BESM was recognized as the fastest machine in Europe. Its speed turned out to be a record - 8,000 op / s.

A student of Sergei Alekseevich, Academician V.A. Melnikov in his memoirs emphasizes: “The genius of S.A. Lebedev was precisely in the fact that he set a goal taking into account the prospects for the development of the structure of the future machine, he knew how to choose the right means for its implementation in relation to the capabilities of the domestic industry.

After the triumphant victory of BESM, under the leadership of Lebedev, work began immediately on the next version of the computer, with improved characteristics: increased speed, more memory, and increased stable operation time. This is how the following versions of the BESM family appeared - BESM-2, BESM-3M, BESM-4. These machines were already mass-produced at the ZSAMM Calculating and Analytical Machines Plant, at first several dozen copies - then hundreds.

The best in the BESM series was by right the famous BESM-6 - the world's first serial "millionaire" (1 million ops / s). The chief designer implemented in it many solutions that were revolutionary for that time, thanks to which the machine survived three generations of computer technology and was produced for 17 years. During this time, about 450 machines were produced, which is an absolute record for a "supercomputer" class computer. To date, the last copy of BESM-6 has been preserved, operating near St. Petersburg in the Training Center of the Navy.

The development of BESM-6 is a vivid example of S.A. Lebedev's creative approach to the creation of computers, taking into account all the possibilities of the technical base, mathematical modeling of structural solutions, as well as production to achieve the best performance of the machine. It should not be forgotten that the production of BESM computers created real conditions for the emergence of several domestic schools for the development of software for these computers, original in their architecture.

The role of the scientist is also great in the field of development of mathematical software for computers. Sergei Alekseevich Lebedev was one of the first to understand the importance of system programming and the importance of cooperation between programmers-mathematicians and engineers in the creation of computer systems, including software as an integral part. On his initiative, a software laboratory was organized at ITMiVT, which developed system software for all systems created at the institute.

The creative energy of Sergei Alekseevich was enough to conduct both scientific projects and specialized ones intended for defense purposes. To strengthen the strategic parity of the state, ITMiVT developed a line of computers M-20, M-40, 5E92, on the basis of which the first Moscow missile defense missile defense system was built.

In March 1961, the first anti-missile complex was successfully tested by the state - it was repeatedly possible to shoot down a real ballistic warhead with a volume of 0.5 cubic meters with an almost direct hit. According to eyewitnesses, during the first tests there was a hitch, which probably became one of the most dramatic moments in the life of S.A. Lebedev and employees participating in the tests. The target was launched, it was conducted by all locators. The programmer presses a button, marking the target on the screen. Following the launch of an anti-missile, its flight was supposed to last 3 minutes, and then a computer failure occurs.

However, in two minutes, the malfunction is eliminated by ITMiVT employee Andrey Mikhailovich Stepanov, and the anti-missile, induced using a computer network, shoots down a ballistic missile. On the computer screen, the inscription: "Undermining the target" is displayed. The next day, the data of film and photo recording confirmed: the head of the ballistic missile fell apart into pieces.

Another interesting fact: the first computer network was created by Lebedev at the Sary-Shagan test site in 1956, just during the testing of the missile defense system. The Americans somehow found out about this and began work on creating a network that later became the "World Wide Web" - the Internet.

On the basis of BESM-6, a multi-machine computer complex AS-6 was created, which for 15 years was used in spacecraft flight control centers for real-time information processing. So in 1975, during the joint flight of the Soyuz and Apollo spacecraft, our AS-6, processing information, calculated data on the flight trajectory in 1 minute, while for the American side such a calculation took half an hour.

None of the types of machines S.A. Lebedev was not a copy of any foreign computer, everything was created on its own scientific basis, using original approaches to solving theoretical and applied problems. And this is the manifestation of the high intellectual abilities of a truly outstanding Russian scientist and his scientific feat.

A humble person and a strong leader

Sergei Alekseevich was a modest and even a little shy person. He always knew how to find a common language with his young colleagues, and they treated him with great and sincere respect. He combined spiritual kindness and trust in people, high integrity and exactingness. He rarely raised his voice to anyone. If his order was not fulfilled on time, he would pick him up and do the task himself. Such a "punishment" was remembered better than any severe reprimands.

S.A. has a personal example. Lebedev was the main principle of education. ITMiVT recalled such a case for a long time. There was very little time left to complete the BESM project, but there were still imperfections. Someone said: “We won’t have time, there are few days left.” Sergei Alekseevich replied: "We'll have time, there are still nights, it's good to work at night - no one bothers." He used to work for three days, without leaving the workplace, forgetting about fatigue, and by his example he captivated others.

Companions of the academician recall one more episode that remarkably characterizes S.A. Lebedev regarding the assessment of the merits and demerits of his work and scientific inventions. The State Commission accepted the BESM-6 machine in combination with its software, which was a new precedent for the acceptance of computer technology. The D-68 operating system, by the time it was presented to the commission, did not fully meet the terms of reference for its development.

Responsible for the complex as a whole, chief designer S.A. Lebedev insisted that the D-68 developers themselves list all the shortcomings in the operating system, although many of them could well have been silent. As a result, the honesty and objectivity of the scientist conquered the State Commission, which accepted the complex as a whole, proposing to eliminate the shortcomings noted by the developers, which was done on time.

Sergei Alekseevich Lebedev knew how to create an atmosphere of a large and friendly family at the institute. Many colleagues often visited his house for family holidays, and went to work with the same mood as when they come to their own home. Together with all the employees, Sergey Alekseevich participated in the improvement of the territory of the new ITMiVT building on Kaluga Highway (now Leninsky Prospekt), planted trees and ornamental bushes that bloom in spring and now.

Sergey Alekseevich paid much attention to the development of independence among his students and employees. If the solution proposed by the student was no worse than his work, then the employee's proposal was often taken as the basis.

Despite his kindness and gentleness towards colleagues, contemporaries noted his decisiveness and even categoricalness when it came to matters of principle. Once Lebedev was summoned to the Central Committee, where he was asked to start copying foreign computers instead of developing his own machines. Lebedev firmly refused. Unfortunately, his position did not stop the ministers of those years.

Another characteristic feature of S.A. Lebedev was that he never claimed for himself the special privileges due to his academic status, he never separated himself from the scientific team. During severe trials at the Sary-Shagan training ground, in living conditions far from comfortable, he lived in the same place as his employees, ate in the same canteen.

Sergei Alekseevich was not an "armchair scientist." In his intense intellectual life there was a place for rest. When the opportunity arose to use the vacation, he always chose active recreation - mountain climbing or kayaking. Lebedev's son Sergei, talking about his father's manner of relaxing, emphasized how skillfully S.A. Lebedev spent his strength, chose a uniform rhythm and calmly walked towards the goal. Sergey Alekseevich always used this approach “hurry slowly” in his work, painstakingly creating the next computer.

The life work of Academician S.A. Lebedeva lives

For our country, the creation of our own computing technologies was a big breakthrough. Sergei Alekseevich, back in the distant 60s, understood that electronic computing technology would be one of the most powerful means of scientific and technological progress, would have a huge impact on the development of science, the economy and defense of the country. Subsequently, in one of his articles, he writes: "The introduction of such machines, the reorganization of human mental labor based on their results can only be compared with such a stage in the history of mankind as the introduction of machine labor instead of manual labor."

The first BESM became the basis for a series of 6 generations of machines that made a huge contribution to the development of domestic science and technology: in space exploration, in the nuclear industry, in the creation of anti-missile defense. Without a doubt, without Lebedev's computer technology in these industries it would be difficult to achieve such results. This contribution was so significant that it was highly appreciated by the designers themselves, in whose interests the computers were created.

Academician Korolev said that without Lebedev's timely machines, it would be difficult to start exploring space. Even in the famous formula 3K - as journalists called the secret scientists I.V. Kurchatov, S.P. Korolev and M.V. Keldysh - knowledgeable people and the designer themselves added the letter L (S.A. Lebedev, his name was also kept secret ). The legitimacy of the formula "3K + L" is beyond doubt, everyone understood that such achievements could not have been possible without a computer.

Sergei Alekseevich Lebedev managed to form a national school of research and development, which for many years held a leading position in the world in a number of areas. Only from the mid-70s of the XX century began a gradual lag behind Western developers. This was largely due to the copying of the IBM series, as well as the emerging gap in the field of the element base.

International recognition came to Lebedev many years after his death. The International Computer Society IEEE Computer Society honored S. A. Lebedev with its highest award - the "Computer Pioneer Award" medal for outstanding innovative work in the field of computer technology. The medal says: “Sergei Alekseevich Lebedev. Developer and designer of the first computer in the Soviet Union. Awarded in 1996."

Academician Lebedev's life work continues to live in his native Institute. After 40 years of successful work, ITMiVT in the difficult 90s, like many other state institutions, went through difficult times. The revival began in 2005 with the change of leadership and the restructuring of the work of the Institute, the future of which is now seen in the development of ITMiVT as a leading international R&D center.

Today, the research team is successfully developing embedded systems for critical applications, intelligent solutions based on sensor networks, system and embedded software, advanced computing architectures, etc.

The Institute has a basic computer department, training specialists in the main areas: the basics of computer design, computer-aided design systems, computer networks and systems, the architecture of specialized computing systems, and so on. Work is underway with senior students of Moscow State University and Moscow Institute of Physics and Technology, who study on real projects, and many, after defending their diplomas, come to work at ITMiVT, write candidate theses, and become scientists.

It is remarkable that at that historical stage of scientific and technological development, when computers with program control inevitably had to be born, a scientist appeared who, with all his experience of previous work, his creative enthusiasm, sincere belief in the correctness of his ideas, was ready to lead the development of computer engineering. in our country.

Right now, observing the rapid development of the electronic technology industry and its penetration into literally all spheres of science and life of society, we can only be surprised at the unprecedented insight of Sergei Alekseevich Lebedev, who was able to appreciate the emergence of a fateful scientific and technical direction, to identify, propose and implement fundamental solutions, to see the prospects their development and successfully manage their implementation.

Expert group / R&D.CNews

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In 1928 S.A. Lebedev graduated Moscow Higher Technical School. N.E. Bauman (MVTU). His thesis work, carried out under the guidance of an outstanding scientist K.A. circle, was devoted to the problem of stability of parallel operation of power plants and was of great scientific and practical importance. Upon graduation from the institute, S.A. Lebedev became a teacher at Moscow Higher Technical School and at the same time an employee All-Union Electrotechnical Institute. IN AND. Lenin (VEI), first as a junior researcher, head of the group, then head of the Laboratory of Electric Networks. In 1933, together with A.S. Zhdanov S.A. Lebedev published a monograph " Stability of parallel operation of electrical systems". In 1935, he received the title of professor, in 1939, without being a candidate of science, he defended his doctoral dissertation related to the theory of artificial stability of power systems developed by him. For 10 years, S.A. Lebedev headed the department of automation of VEI. In this Many well-known scientists started their work in the department: D.V. candlestick, A.V. Mikhailov, A.V. Feldbaum, N.N. Sheremetevsky and etc.

During the war, S.A. Lebedev developed a system for stabilizing a tank gun when aiming, adopted for service, an analog system for automatic homing to the target of an aircraft torpedo. In 1945 S.A. Lebedev created the country's first electronic analog computer for solving systems of ordinary differential equations, which are often encountered in problems related to energy.

In 1946 S.A. Lebedev was invited to the Academy of Sciences of Ukraine for the position of director of the Institute of Energy. A year later, the Institute of Energy was divided into two, and S.A. Lebedev became director Institute of Electrical Engineering of the Academy of Sciences of Ukraine.

Here, together with L.V. Tsoukernik S.A. Lebedev carried out research on the management of power systems and the development of automation devices that increase the stability of power systems.

In 1950 S.A. Lebedev and L.V. Tsoukernik was awarded the State Prize of the USSR.

Solving the problems of electrical engineering and energy with the help of analog computers, S.A. Lebedev came to the formulation of the problem of creating a digital machine.

Since the autumn of 1948, S.A. Lebedev began development (). To determine the set of MESM operations, he invited me to come to Kyiv and K.A. Semendyaeva. Building Basics MESM were discussed in January-March 1949 at the created S.A. Lebedev seminar, in which they participated, B.V. Gnedenko, A.Yu. Ishlinsky, A.A. Kharkevich and laboratory staff S.A. Lebedev.

By the end of 1949, the block diagram of the machine was determined. In 1950 MESM was mounted in a two-story building of the former monastery in Feofaniya (near Kiev), where the laboratory of S.A. Lebedev.

At the end of 1951 MESM passed the tests and was accepted into operation by the Commission of the Academy of Sciences of the USSR headed by Academician . The commission included academicians, professors K.A. Semendyaev, A.G. Kourosh.

In 1952 on MESM the most important scientific and technical problems from the field of thermonuclear processes were solved ( I WOULD. Zeldovich), space flights and rocket technology ( M.V. Keldysh, ), long-distance power lines (S.A. Lebedev), mechanics ( G.N. Savin), statistical quality control ( B.V. Gnedenko).

In 1950, when the layout was tested MESM, such a machine worked only in England - M. Wilks, 1949, and the arithmetic unit was consistent.

After MESM the creation of a specialized COMPUTER SESM for solving systems of algebraic equations. Its chief designer was Z.L. Rabinovich. Basic building ideas SESM put forward by S.A. Lebedev.

In 1950 S.A. Lebedev began the development of the USSR Academy of Sciences. In March 1950, he was appointed head of the laboratory of the Institute of Fine Mechanics and Computer Technology ( ITM and VT), whose director was M.A. Lavrentiev.

The development of an arithmetic device by S.A. Lebedev instructed P.P. Golovistikov, and control devices - K.S. Neslukhovsky. Internship students from universities also worked on BESM, who completed their diploma works - the layout of individual blocks and a description of the relevant sections of the BESM draft design:, A.G. Louth, I.D. Vizun, A.S. Fedorov And L.A. Orlov. In April 1951, the State Commission, chaired M.V. Keldysh accepted the draft designs of machines and "".

In the first quarter of 1953, the BESM was set up, and in April 1953 it was accepted into operation by the State Commission.

Due to the shortage of electronic tubes, which were then supplied only for "", the first three years it was operated with memory on acoustic mercury tubes, which reduced its speed by several times. In 1956, BESM was adopted by the State Commission for the second time - with memory on potentialoscopes.

In 1956 report by S.A. Lebedev about BESM at the international conference in Darmstadt made a sensation - BESM was at the level of the best American machines and the fastest in Europe.

In 1958, BESM with a memory on ferrite cores with a capacity of 2048 words was put into mass production, it was produced under the name factory them. Volodarsky.

In 1953, on the recommendation M.A. Lavrentiev, who became vice-president of the Academy of Sciences of the USSR, S.A. Lebedev was appointed director. In 1953 he was elected a full member of the USSR Academy of Sciences. At a banquet for the election of new members of the Academy S.O. Schmidt said: "Today we have chosen two remarkable scientists as academicians - S.A. Lebedev And HELL. Sakharov".

In 1955 S.A. Lebedev began development (the figure in the title indicated the expected speed - 20 thousand ops / s). At that time, no other machine in the world had such a computing speed. By a decree of the Government of the USSR, the creation was entrusted to and. S.A. Lebedev became chief designer M.K. Sulim(SKB-245) - his deputy. The ideology and structure of the M-20 was developed by S.A. Lebedev, command system -, circuitry of the element base - P.P. tadpoles. M.K. Sulim supervised the development of technical documentation and the manufacture of a prototype in SKB-245.

In 1958, the State Commission adopted the M-20 and recommended it for mass production.

For the first time in domestic practice in S.A. Lebedev, in order to improve performance, implemented automatic address modification, combining the operation of an arithmetic unit and fetching instructions from memory, introducing buffer memory for data arrays issued for printing, combining data input and output with an account, and using fully synchronous signal transmission in logical circuits.

Later, semiconductor versions of the M-20 were developed, implementing the same architecture:

• and (chief designer - M.K. Sulim);
• BESM-3M and (chief designer - O.P. Vasiliev).

ITM and VT after completion of work on tube lamps, he began designing a semiconductor one, which had a speed of 1 million op. / s. The chief designer of BESM-6 was S.A. Lebedev, deputies - his students and.

In 1967, the State Commission, under the chairmanship, accepted with high appraisal and recommended it for mass production.

BESM-6 had full software. Many leading programmers of the country took part in its creation.

On the initiative and with the active participation of S.A. Lebedev, during the development, the future machine was simulated using software models.

On the basis of BESM-6, computing centers for collective use for scientific organizations, systems for automating scientific research in nuclear physics and other fields of science, information and computing systems for processing information in real time were created. It was used to model the most complex physical and control processes, in software design systems for new computers.

BESM-6 was produced for 17 years. For the development and implementation of BESM-6, its creators (from ITM and VT - S.A. Lebedev, V.A. Melnikov, L.N. Korolev, L.A. Zak, V.N. Laut, V.I. Smirnov , A. A. Sokolov, A. N. Tomilin, M. V. Tyapkin, from the CAM plant - V. A. Ivanov, V. Ya. Semeshkin) were awarded the State Prize.

ITM and VT, together with the SAM plant, developed a computer system based on BESM-6, the modular organization and unified exchange channels of which made it possible to build decentralized multi-machine computing systems. An efficient implementation of compilers from high-level programming languages, a multi-level memory protection system based on state stack mechanisms were provided. , built on the principle of decentralization, provided operation in batch processing, remote batch processing, time sharing, real time. AC-6 was used for data processing and control in systems of space experiments, as well as in a number of computer centers of large research organizations.

Specialized computers created under the direction of S.A. Lebedev for the anti-missile defense system, became the basis for achieving strategic parity between the USSR and the USA during the Cold War. In 1952-1955. student of S.A. Lebedev, specialized ones were developed for automatic data acquisition from the radar and automatic tracking of targets. Then for the missile defense system, the general designer of which was G.V. Kisunko, in 1958 the M-40 tube computer was proposed, and a little later the M-50 (floating point).

The possibility of hitting ballistic missiles, provided by missile defense, forced the United States to look for ways to conclude an agreement with the USSR on limiting missile defense, which appeared in 1972.

The creators of the first missile defense system received the Lenin Prize. Among them were G.V. Kisunko, S.A. Lebedev and V.S. Burtsev.

See the release of the next series of high-performance computers that were developed by ITM and VT, S.A. Lebedev did not have a chance.

Sergei Alekseevich Lebedev died on July 3, 1974 in Moscow. He is buried at the Novodevichy Cemetery.

Name S.A. Lebedeva now wears ITM and VT. Students of S.A. Lebedev created their own scientific schools and teams.