> The Water Integrator was an early analog computer built in the Soviet Union in 1936 by Vladimir Sergeevich Lukyanov. It functioned by careful manipulation of

> The Water Integrator was an early analog computer built in the Soviet Union in 1936 by Vladimir Sergeevich Lukyanov. It functioned by careful manipulation of water through a room full of interconnected pipes and pumps. The water level in various chambers (with precision to fractions of a millimeter) represented stored numbers, and the rate of flow between them represented mathematical operations. This machine was capable of solving inhomogeneous differential equations. https://www.techspot.com/trivia/97-1930s-which-countries-built-analog-computer-ran-water/ https://www.techspot.com/trivia/97-1930s-which-countries-bui... https://en.wikipedia.org/wiki/Water_integrator https://en.wikipedia.org/wiki/Water_integrator