Digi-Comp 1
DIGI-COMP 1

DIGI COMP 1 is a mechanical
equivalent of an electronic digital
computer. With DIGI COMP 1 one can
PLAY GAMES, SOLVE RIDDLES, and DO
ARITHMETIC in the same way as on a
large digital computer.
DIGI COMP 1 is the first real BINARY COMPUTER, which works MECHANICALLY the same way as
giant electronic digital computers, which work electrically. DIGI COMP can be
considered as a small version of an actual computer. In fact, with the addition of many
more parts, DIGI COMP could solve very large problems just as an electronic digital
computer does. The main difference is that since DIGI COMP is mechanical it would be
much slower and larger than an electronic computer.
In or around 1967 E.S.R Inc came up with DIGI-COMP II, which as it's predecessor
DIGI-COMP 1 was also mechanical.