[1][2][3] It functioned by careful manipulation of water through a room full of interconnected pipes and pumps.
In 1941, Lukyanov created a hydraulic integrator of modular design, which made it possible to assemble a machine for solving various problems.
In 1949–1955, an integrator in the form of standard unified units was developed at the NIISCHETMASH Institute.
In 1955, the Ryazan plant of calculating and analytical machines began the serial production of integrators with the factory brand name “IGL” (russian: Интегратор Гидравлический Лукьянова - integrator of the Lukyanov hydraulic system).
Integrators were widely distributed, delivered to Czechoslovakia, Poland, Bulgaria and China.