Water Integrator (Paperback)

High Quality Content by WIKIPEDIA articles! The Water Integrator was an early analog computer built in the Soviet Union in 1936. 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 non-homogeneous differential equations. Water analog computers were used in USSR until the 1980s for large-scale modelling.