COMPI

Abstract

A computer model for illustrating basic computer functions is presented. The model offers 16 instructions including a subroutine jump, indirect addressing, and 64 words of memory. Instruction and data entry is simplified by mnemonics and the use of a dedicated keyboard. Arrangement and lettering of the keys make the model self-explanatory without additional operating instructions. Contents of registers and memory are displayed on a screen. Programs may be executed in a "slow"-mode, where data transfers are illustrated by moving the information on the screen from one location to another. For the student the model combines hands-on experience on a computer console with the illustrative power of a film.