Non HP Emulators

This scientific desktop printing calculator had seven individual chips, which together form a processor. It runs a machine code which I never learned to understand, so this is a simulation.

• MAC Version ZIP · 2.8 MB

This four-function desktop calculator from the early days of computing has no processor and therefore no machine code. Its gate logic is calculated by a logic simulator for every clock cycle, so it behaves exactly like the original.

• MAC Version ZIP · 1.9 MB

Schematic: Riccar latest schematic