Setun

Setun is a computer that was developed in the Soviet Union in the 1950s. It is notable for being one of the first computers to utilize a ternary number system, which uses three digits (0, 1, and 2) instead of the binary system (0 and 1) that most modern computers use. The Setun computer was designed by a team led by Soviet scientist Sergei Alexeyevich Lebedev at the Moscow Institute of Electronic Machine Engineering.