January 20, 2010 at 22:34Isaac Brook Pioneer of domestic computer technology
Soviet scientist, inventor, founder and first director of the Institute of Electronic Control Machines of the USSR Academy of Sciences.
Together with S.A. Lebedev was the founder of domestic computer technology. If S.A. Lebedev was the father of domestic mainframes, then we owe Issak Brook the creation of low-computing machines.
As B. N. Malinovsky writes, “the similarity of the biographies of these two remarkable scientists is striking. Both were born in the same year, studied at the same institute, “stood on their feet” as scientists in one scientific organization, both dealt with energy issues, went from it to computer technology, both became heads of leading scientific schools in the field of digital computers. ”
I.S.Bruk was born on November 8, 1902 in Minsk in a poor family of a worker in a tobacco factory. In 1920 he graduated from a real school, and in 1925 he graduated from the Electrotechnical Department of MSTU. N.E.Bauman. As a student, I.S. Brook took up scientific research. His diploma was devoted to new methods of regulation of induction motors. “Abilities and interest in technology he
inherited from his father, ”recalls his sister, Mirra Semenovna Brook. - Studying at the Minsk real school, he was especially interested in the exact sciences - mathematics, physics, technology. In training laboratories, they sometimes gave him old used appliances. At the Energia plant, where Isaac began to come, craftsmen, looking like the boy's exceptional curiosity for technology, explained to him the arrangement of machines and machine tools, gave away some old details. At the end of MSTU he was invited to work at the All-Union Electrotechnical Institute. V.I. Lenin, where he participated in the creation of a new series of induction motors and was engaged in solving the problems of parallel operation of electric generators.
In 1930, Brooke moved to Kharkov, where at one of the plants under his leadership several electrical machines of a new design were developed and built, including explosion-proof asynchronous motors.
In 1935, I.S. Brook returned to Moscow and was sent to the Energy Institute of the USSR Academy of Sciences (ENIN). Here he organized a laboratory of electrical systems and launched research on calculating the regimes of powerful energy systems. To simulate such systems, he created an AC current table - an analog computer. For these works, in May 1936, JS Bruk was awarded the degree of candidate of technical sciences without defending a dissertation, and in October 1936 he defended his doctoral dissertation on the topic “Longitudinal compensation of power lines.” After completing work on the differential analyzer, Brooke was elected a corresponding member of the Academy of Sciences.
In 1938, Brooke set about creating a mechanical differential analyzer for solving systems of differential equations up to the 6th order, inclusive. The analyzer occupied an area of 60 square meters. m, and there were more than a thousand gears in it alone.
In 1939, at a meeting of the Presidium of the USSR Academy of Sciences, I.S.Bruk made a report on the mechanical analyzer created under his leadership to solve differential equations up to the 6th order, after which he was elected in 1939 as a corresponding member of the USSR Academy of Sciences.
During the Great Patriotic War, continuing research in the field of electric power, I.S.Bruk successfully worked on anti-aircraft fire control systems, invented the aircraft gun synchronizer, which shot through a rotating propeller of an aircraft.
In 1947, I.S. Brook was elected a full member of the Academy of Artillery Sciences. Solving problems in the electric power industry using analog computer technology, I.S.Bruk came to the conclusion that it was necessary to create electronic digital
computers (ECMs) to obtain the necessary accuracy of calculations. The beginning of the work of I.S.Bruk on digital computers dates back to 1948. It is interesting to note that both S. A. Lebedev and I. S. Brook came to the development of digital machines, having
experience in solving problems from the field of electric power on analog computers. In 1948, I.S.Bruk, together with B.I. Rameev, compiled a report on the principles of operation of a binary computer with a stored program.
The USSR’s first copyright certificate for the invention of a digital computer in the name of I.S.Bruk and B.I. Rameev was dated December 1948.
But, alas, this project has remained unrealized.
In 1949, Rameev was drafted into the army. Brooke lost his only performer. The drafted digital electronic computer remained on paper. Nevertheless, Brook's ambitious emotional nature was certainly fueled by information about the beginning of work on creating computers in the ITM and VT of the USSR Academy of Sciences, which developed with the arrival of M.A. Lavrentyev, and then S.A. Lebedev, and
in SKB-245 where Rameev appeared. In January 1950, I. S. Brook turned to the personnel department of the Moscow Power Engineering Institute with a request to send capable young specialists to them who graduated from the radio engineering faculty. In March 1950, the department
MPEI sent personnel to the laboratory of Nikolai Yakovlevich Matyukhin, who received a diploma with honors for his excellent studies and participation in scientific research while still a student, but did not pass the personnel commission when entering graduate school.
In 1950-1952 under the direction of IS Bruk, the M-1 small-sized electronic automatic digital machine was developed. In the summer of 1951, approximately simultaneously with the MESM machine, the M-1 machine started working, and at the beginning of 1952 it
was put into trial operation. But only nine laboratory employees who did not have it were engaged in its creation.
academic degrees (with the exception of I. S. Brook). If you imagine the conditions in which they worked, then this can be assessed as a wonderful creative impulse of the young team. The M-1 developers retained the report “M-1 Automatic
Computing Machine,” approved by the Director of the Energy Institute of the USSR Academy of Sciences, Academician G. M. Krzhizhanovsky on December 15, 1951 ”.
From the memoirs of M. A. Kartsev: “In early 1950, a strange detail was discovered among the property brought from the trophy warehouse (I can’t say for sure who made this find, maybe Brook, maybe Matyukhin, maybe
Rameev, who previously worked for us). For a long time no one could understand its purpose and origin until they realized that it was a miniature cuprox rectifier. This detail was appreciated, and M-1 became the first
computer in the world in which all logic circuits were made on semiconductors. ”
In April 1952, Brook's laboratory began to create a more advanced digital computer M-2. The development team was headed by M. A. Kartsev. The M-2 had a three-address instruction system, a format of 34 binary digits, a
representation of floating-point and fixed-point numbers, memory on cathode ray tubes (CRTs) with a capacity of 512 numbers and additional memory on a magnetic drum with a capacity of 512 numbers. Productivity M-2 was
an average of 2 thousand op / sec. In the memory of M-2, conventional oscillographic CRTs were used, and in logic circuits, semiconductor diodes - which significantly reduced the number of electronic tubes, power consumption and cost. Building Experience
diode logic circuits used in M-2, subsequently served as the basis for diode-transistor logic - circuitry of the second-generation computer base. In the summer of 1953, the M-2 was commissioned. The M-2 machine, generally speaking, remained in a single copy, they tried to repeat it in China, but we did not have information that it worked there. But it was a serious car. It carried out very large and very important calculations. As a matter of fact, for several years in the Soviet Union there were two working machines: the M-2 and the BESM machine of the Institute of Precision Mechanics and Computer Engineering of the USSR Academy of Sciences. Big calculations were made by Sergey L. Sobolev for Kurchatov. Tasks were considered for the firm of Axel Ivanovich Berg.
Subsequently, under the leadership of I. S. Bruk, small digital computers “M-2”, “M-3”, “M-4”, etc. were created. Understanding that to solve a number of problems high performance is not required,
I. S. .Brook in 1955-1956 developed and economically substantiated the concept of small computers by introducing the term “small-sized machine”.
In 1956, I.S.Bruk made a report at a session of the USSR Academy of Sciences on Automation, in which he outlined the main areas of industrial use of computers and control machines, and in 1957 he set the task of developing the theory, principles of construction and application of electronic control machines . To solve it, in 1958 the Institute of Electronic Control Machines of the USSR Academy of Sciences (INEUM) was created. The director of the institute was I.S. Brook.
I.S.Bruk in the second half of the 1950s came to the conclusion that along with the use of computers for scientific calculations and facility management, it is necessary to develop another area of computer applications - processing of economic information for accounting,
statistics, planning, modeling of the economy. Having become acquainted with the methods of linear programming of L.V. Kantorovich, the classical dynamic models of economics and the methods of intersectoral balances of V.Leontiev, I.S.Bruk launched work at the INEUM on the application of mathematical methods and computer technology to solve economic problems at the state level.
The first solution to the problem of creating small computers, posed by I.S. Brook, was the development of M-3, carried out jointly by the Laboratory of Control Machines and Systems of the Academy of Sciences of the USSR and VNIIEM in 1956-57. M-3 worked with 30-bit fixed-point binary numbers, had a two-address instruction format, a memory capacity of 2048 numbers on a magnetic drum and a capacity of 30 op / sec. When working with ferrite memory of the same capacity, the M-3 performance increased to 1.5 thousandop / sec. It had a total of 770 electronic lamps and 3 thousand cuprox diodes and occupied an area of 3 sq.m. The main ideas for building the M-3 were formulated by I.S. Brook, N.Ya. Matyukhin and V.V. Belynsky. M-3 was intended for design and research institutes and after its acceptance in 1957, the State Commission, chaired by academician N.G. Bruevich, was mass-produced at the S. Ordzhonikidze in Minsk. Prior to the serial production, three organizations in cooperation on shares produced M-3 samples for themselves: KB academician S.P. Korolev, VNIIEM (academician A.G. Iosifyan) and the Institute of Mathematics of the Academy of Sciences of the Armenian USSR (academician S.N. Mergelyan ), from which the Yerevan Institute of Mathematical Machines later stood out. Thus, the M-3 served as a prototype for two industrial computer series - Minsk and Hrazdan. In the Minsk-2, Minsk-3 and other machines that appeared later in Belarus and Armenia, the M-1 and M-3 genes were noticeable. The school of control cars VNIIEM also had its progenitor M-3, which was repeatedly noted by the participants of its development B.M. Kagan, V.M. Dolkart. Iosifyan) and the Institute of Mathematics of the Academy of Sciences of the Armenian USSR (academician S.N. Mergelyan), from which the Yerevan Institute of Mathematical Machines later stood out. Thus, the M-3 served as a prototype for two industrial computer series - Minsk and Hrazdan. In the Minsk-2, Minsk-3 and other machines that appeared later in Belarus and Armenia, the M-1 and M-3 genes were noticeable. The school of control cars VNIIEM also had its progenitor M-3, which was repeatedly noted by the participants of its development B.M. Kagan, V.M. Dolkart. Iosifyan) and the Institute of Mathematics of the Academy of Sciences of the Armenian USSR (academician S.N. Mergelyan), from which the Yerevan Institute of Mathematical Machines later stood out. Thus, the M-3 served as a prototype for two industrial computer series - Minsk and Hrazdan. In the Minsk-2, Minsk-3 and other machines that appeared later in Belarus and Armenia, the M-1 and M-3 genes were noticeable. The school of control cars VNIIEM also had its progenitor M-3, which was repeatedly noted by the participants of its development B.M. Kagan, V.M. Dolkart.
In the tradition of ISBruk's school of small computers, the development of the Setun machine was completed, which was produced in series by the Kazan Computer Plant. The author of the Setun machine, N. P. Brusentsov, collaborated with I. S. Brook during the creation of the M-2 and developed engineering approaches to the design of small computers that were characteristic of the school of I. S. Brook. The Setun machine is interesting in that it was based on the ternary number system. Also interesting is the experience of programming tasks on the Setun machine, which gave an idea of the approaches to structural programming and the interactive mode of operation.
The following machines were created at INEUM of the USSR Academy of Sciences under the leadership of Brook: M-4 (1957-1960) for solving special problems in the systems of the Radio Engineering Institute of the USSR Academy of Sciences (chief designer - M. A. Kartsev); M-5 (1959-1960) - for solving economic problems, planning and managing the national economy (chief designer - V.V. Belynsky); M-7-200 and M-7-800 (1966-1969) - for the tasks of controlling powerful power units (Konakovskaya state district power station, Slavyanskaya state district power station) and technological processes (chief designer - N. N. Lenov).
As the director of the institute, I. S. Brook paid much attention to the needs of the growing institute, the creation of a healthy, efficient team, and the development of high scientific exactingness among his students. Upon retiring in 1964, Isaac Semenovich remained a scientific consultant and head of the scientific and technical council of INEUM. I.S. Brooke was an outstanding and very peculiar person. By the style of his activity, it was, rather, a lone scientist, a generator of ideas that his students and associates picked up and implemented. And he switched his creative energy and talent to something new. I could not do advertising to myself and my scientific achievements, therefore, the direction for the development of small computers sounded, perhaps, not as loud as the achievements of the creators of super-productive machines of the first and second generation.
For his services in the field of domestic science and technology, I.S. Brook was awarded four orders of the Red Banner of Labor and USSR medals.
He has published over 100 scientific papers. A scholar of wide erudition, a talented inventor and experimenter, he received more than 50 copyright certificates for his inventions, 16 of them in the last five years of his life, being already at an advanced age.
Isaac Brook died on October 6, 1974, three months after the death of S. A. Lebedev, was buried in Moscow at the Vvedensky cemetery.
Together with S.A. Lebedev was the founder of domestic computer technology. If S.A. Lebedev was the father of domestic mainframes, then we owe Issak Brook the creation of low-computing machines.
As B. N. Malinovsky writes, “the similarity of the biographies of these two remarkable scientists is striking. Both were born in the same year, studied at the same institute, “stood on their feet” as scientists in one scientific organization, both dealt with energy issues, went from it to computer technology, both became heads of leading scientific schools in the field of digital computers. ”
I.S.Bruk was born on November 8, 1902 in Minsk in a poor family of a worker in a tobacco factory. In 1920 he graduated from a real school, and in 1925 he graduated from the Electrotechnical Department of MSTU. N.E.Bauman. As a student, I.S. Brook took up scientific research. His diploma was devoted to new methods of regulation of induction motors. “Abilities and interest in technology he
inherited from his father, ”recalls his sister, Mirra Semenovna Brook. - Studying at the Minsk real school, he was especially interested in the exact sciences - mathematics, physics, technology. In training laboratories, they sometimes gave him old used appliances. At the Energia plant, where Isaac began to come, craftsmen, looking like the boy's exceptional curiosity for technology, explained to him the arrangement of machines and machine tools, gave away some old details. At the end of MSTU he was invited to work at the All-Union Electrotechnical Institute. V.I. Lenin, where he participated in the creation of a new series of induction motors and was engaged in solving the problems of parallel operation of electric generators.
In 1930, Brooke moved to Kharkov, where at one of the plants under his leadership several electrical machines of a new design were developed and built, including explosion-proof asynchronous motors.
In 1935, I.S. Brook returned to Moscow and was sent to the Energy Institute of the USSR Academy of Sciences (ENIN). Here he organized a laboratory of electrical systems and launched research on calculating the regimes of powerful energy systems. To simulate such systems, he created an AC current table - an analog computer. For these works, in May 1936, JS Bruk was awarded the degree of candidate of technical sciences without defending a dissertation, and in October 1936 he defended his doctoral dissertation on the topic “Longitudinal compensation of power lines.” After completing work on the differential analyzer, Brooke was elected a corresponding member of the Academy of Sciences.
In 1938, Brooke set about creating a mechanical differential analyzer for solving systems of differential equations up to the 6th order, inclusive. The analyzer occupied an area of 60 square meters. m, and there were more than a thousand gears in it alone.
In 1939, at a meeting of the Presidium of the USSR Academy of Sciences, I.S.Bruk made a report on the mechanical analyzer created under his leadership to solve differential equations up to the 6th order, after which he was elected in 1939 as a corresponding member of the USSR Academy of Sciences.
During the Great Patriotic War, continuing research in the field of electric power, I.S.Bruk successfully worked on anti-aircraft fire control systems, invented the aircraft gun synchronizer, which shot through a rotating propeller of an aircraft.
In 1947, I.S. Brook was elected a full member of the Academy of Artillery Sciences. Solving problems in the electric power industry using analog computer technology, I.S.Bruk came to the conclusion that it was necessary to create electronic digital
computers (ECMs) to obtain the necessary accuracy of calculations. The beginning of the work of I.S.Bruk on digital computers dates back to 1948. It is interesting to note that both S. A. Lebedev and I. S. Brook came to the development of digital machines, having
experience in solving problems from the field of electric power on analog computers. In 1948, I.S.Bruk, together with B.I. Rameev, compiled a report on the principles of operation of a binary computer with a stored program.
The USSR’s first copyright certificate for the invention of a digital computer in the name of I.S.Bruk and B.I. Rameev was dated December 1948.
But, alas, this project has remained unrealized.
In 1949, Rameev was drafted into the army. Brooke lost his only performer. The drafted digital electronic computer remained on paper. Nevertheless, Brook's ambitious emotional nature was certainly fueled by information about the beginning of work on creating computers in the ITM and VT of the USSR Academy of Sciences, which developed with the arrival of M.A. Lavrentyev, and then S.A. Lebedev, and
in SKB-245 where Rameev appeared. In January 1950, I. S. Brook turned to the personnel department of the Moscow Power Engineering Institute with a request to send capable young specialists to them who graduated from the radio engineering faculty. In March 1950, the department
MPEI sent personnel to the laboratory of Nikolai Yakovlevich Matyukhin, who received a diploma with honors for his excellent studies and participation in scientific research while still a student, but did not pass the personnel commission when entering graduate school.
In 1950-1952 under the direction of IS Bruk, the M-1 small-sized electronic automatic digital machine was developed. In the summer of 1951, approximately simultaneously with the MESM machine, the M-1 machine started working, and at the beginning of 1952 it
was put into trial operation. But only nine laboratory employees who did not have it were engaged in its creation.
academic degrees (with the exception of I. S. Brook). If you imagine the conditions in which they worked, then this can be assessed as a wonderful creative impulse of the young team. The M-1 developers retained the report “M-1 Automatic
Computing Machine,” approved by the Director of the Energy Institute of the USSR Academy of Sciences, Academician G. M. Krzhizhanovsky on December 15, 1951 ”.
From the memoirs of M. A. Kartsev: “In early 1950, a strange detail was discovered among the property brought from the trophy warehouse (I can’t say for sure who made this find, maybe Brook, maybe Matyukhin, maybe
Rameev, who previously worked for us). For a long time no one could understand its purpose and origin until they realized that it was a miniature cuprox rectifier. This detail was appreciated, and M-1 became the first
computer in the world in which all logic circuits were made on semiconductors. ”
In April 1952, Brook's laboratory began to create a more advanced digital computer M-2. The development team was headed by M. A. Kartsev. The M-2 had a three-address instruction system, a format of 34 binary digits, a
representation of floating-point and fixed-point numbers, memory on cathode ray tubes (CRTs) with a capacity of 512 numbers and additional memory on a magnetic drum with a capacity of 512 numbers. Productivity M-2 was
an average of 2 thousand op / sec. In the memory of M-2, conventional oscillographic CRTs were used, and in logic circuits, semiconductor diodes - which significantly reduced the number of electronic tubes, power consumption and cost. Building Experience
diode logic circuits used in M-2, subsequently served as the basis for diode-transistor logic - circuitry of the second-generation computer base. In the summer of 1953, the M-2 was commissioned. The M-2 machine, generally speaking, remained in a single copy, they tried to repeat it in China, but we did not have information that it worked there. But it was a serious car. It carried out very large and very important calculations. As a matter of fact, for several years in the Soviet Union there were two working machines: the M-2 and the BESM machine of the Institute of Precision Mechanics and Computer Engineering of the USSR Academy of Sciences. Big calculations were made by Sergey L. Sobolev for Kurchatov. Tasks were considered for the firm of Axel Ivanovich Berg.
Subsequently, under the leadership of I. S. Bruk, small digital computers “M-2”, “M-3”, “M-4”, etc. were created. Understanding that to solve a number of problems high performance is not required,
I. S. .Brook in 1955-1956 developed and economically substantiated the concept of small computers by introducing the term “small-sized machine”.
In 1956, I.S.Bruk made a report at a session of the USSR Academy of Sciences on Automation, in which he outlined the main areas of industrial use of computers and control machines, and in 1957 he set the task of developing the theory, principles of construction and application of electronic control machines . To solve it, in 1958 the Institute of Electronic Control Machines of the USSR Academy of Sciences (INEUM) was created. The director of the institute was I.S. Brook.
I.S.Bruk in the second half of the 1950s came to the conclusion that along with the use of computers for scientific calculations and facility management, it is necessary to develop another area of computer applications - processing of economic information for accounting,
statistics, planning, modeling of the economy. Having become acquainted with the methods of linear programming of L.V. Kantorovich, the classical dynamic models of economics and the methods of intersectoral balances of V.Leontiev, I.S.Bruk launched work at the INEUM on the application of mathematical methods and computer technology to solve economic problems at the state level.
The first solution to the problem of creating small computers, posed by I.S. Brook, was the development of M-3, carried out jointly by the Laboratory of Control Machines and Systems of the Academy of Sciences of the USSR and VNIIEM in 1956-57. M-3 worked with 30-bit fixed-point binary numbers, had a two-address instruction format, a memory capacity of 2048 numbers on a magnetic drum and a capacity of 30 op / sec. When working with ferrite memory of the same capacity, the M-3 performance increased to 1.5 thousandop / sec. It had a total of 770 electronic lamps and 3 thousand cuprox diodes and occupied an area of 3 sq.m. The main ideas for building the M-3 were formulated by I.S. Brook, N.Ya. Matyukhin and V.V. Belynsky. M-3 was intended for design and research institutes and after its acceptance in 1957, the State Commission, chaired by academician N.G. Bruevich, was mass-produced at the S. Ordzhonikidze in Minsk. Prior to the serial production, three organizations in cooperation on shares produced M-3 samples for themselves: KB academician S.P. Korolev, VNIIEM (academician A.G. Iosifyan) and the Institute of Mathematics of the Academy of Sciences of the Armenian USSR (academician S.N. Mergelyan ), from which the Yerevan Institute of Mathematical Machines later stood out. Thus, the M-3 served as a prototype for two industrial computer series - Minsk and Hrazdan. In the Minsk-2, Minsk-3 and other machines that appeared later in Belarus and Armenia, the M-1 and M-3 genes were noticeable. The school of control cars VNIIEM also had its progenitor M-3, which was repeatedly noted by the participants of its development B.M. Kagan, V.M. Dolkart. Iosifyan) and the Institute of Mathematics of the Academy of Sciences of the Armenian USSR (academician S.N. Mergelyan), from which the Yerevan Institute of Mathematical Machines later stood out. Thus, the M-3 served as a prototype for two industrial computer series - Minsk and Hrazdan. In the Minsk-2, Minsk-3 and other machines that appeared later in Belarus and Armenia, the M-1 and M-3 genes were noticeable. The school of control cars VNIIEM also had its progenitor M-3, which was repeatedly noted by the participants of its development B.M. Kagan, V.M. Dolkart. Iosifyan) and the Institute of Mathematics of the Academy of Sciences of the Armenian USSR (academician S.N. Mergelyan), from which the Yerevan Institute of Mathematical Machines later stood out. Thus, the M-3 served as a prototype for two industrial computer series - Minsk and Hrazdan. In the Minsk-2, Minsk-3 and other machines that appeared later in Belarus and Armenia, the M-1 and M-3 genes were noticeable. The school of control cars VNIIEM also had its progenitor M-3, which was repeatedly noted by the participants of its development B.M. Kagan, V.M. Dolkart.
In the tradition of ISBruk's school of small computers, the development of the Setun machine was completed, which was produced in series by the Kazan Computer Plant. The author of the Setun machine, N. P. Brusentsov, collaborated with I. S. Brook during the creation of the M-2 and developed engineering approaches to the design of small computers that were characteristic of the school of I. S. Brook. The Setun machine is interesting in that it was based on the ternary number system. Also interesting is the experience of programming tasks on the Setun machine, which gave an idea of the approaches to structural programming and the interactive mode of operation.
The following machines were created at INEUM of the USSR Academy of Sciences under the leadership of Brook: M-4 (1957-1960) for solving special problems in the systems of the Radio Engineering Institute of the USSR Academy of Sciences (chief designer - M. A. Kartsev); M-5 (1959-1960) - for solving economic problems, planning and managing the national economy (chief designer - V.V. Belynsky); M-7-200 and M-7-800 (1966-1969) - for the tasks of controlling powerful power units (Konakovskaya state district power station, Slavyanskaya state district power station) and technological processes (chief designer - N. N. Lenov).
As the director of the institute, I. S. Brook paid much attention to the needs of the growing institute, the creation of a healthy, efficient team, and the development of high scientific exactingness among his students. Upon retiring in 1964, Isaac Semenovich remained a scientific consultant and head of the scientific and technical council of INEUM. I.S. Brooke was an outstanding and very peculiar person. By the style of his activity, it was, rather, a lone scientist, a generator of ideas that his students and associates picked up and implemented. And he switched his creative energy and talent to something new. I could not do advertising to myself and my scientific achievements, therefore, the direction for the development of small computers sounded, perhaps, not as loud as the achievements of the creators of super-productive machines of the first and second generation.
For his services in the field of domestic science and technology, I.S. Brook was awarded four orders of the Red Banner of Labor and USSR medals.
He has published over 100 scientific papers. A scholar of wide erudition, a talented inventor and experimenter, he received more than 50 copyright certificates for his inventions, 16 of them in the last five years of his life, being already at an advanced age.
Isaac Brook died on October 6, 1974, three months after the death of S. A. Lebedev, was buried in Moscow at the Vvedensky cemetery.