List of Home Computers - Cardboard and Demonstrator "computers"

Cardboard and Demonstrator "computers"

Logic demonstrators illustrated some of the logical principles of computer circuits, but were incapable of automatic operation or non-trivial calculations. Some were literally cardboard, others used combinations of switches and lamps to show how logical operations worked. Some products demonstrated logical operations purely mechanically.

• CARDboard Illustrative Aid to Computation cardboard computer logic demonstrator
• Geniac, non-electronic logic demonstrator
• Minivac 601, logic trainer that demonstrated computer circuits
• Digi-Comp I, mechanical logic demonstrator
• Digi-Comp II, mechanical logic using marbles