- Water integrator
The Water Integrator was an early
analog computerbuilt in the Soviet Unionin 1936. It functioned by careful manipulation of waterthrough 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.
History of computing hardware
* [http://www.blikstein.com/paulo/projects/project_water.html MIT water computer]
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