Digital data processor for video display system - has monolithic microprocessor controlled by program stored in sub-memory

摘要

A digital data processing system has an associated memory for storage of programme steps and data for the basis of a video display system. The digital data processing system consists of a central processor, memory, input-output and a video display sub-system. The central processor is a monolithic microprocessor of type T19985 and is controlled by the control programme stored in the sub-memory. The input-output control unit is also a monolithic integrated circuit of type T19901, coupled over buses with a keyboard, sensors, tape, disc printer etc. ROMs and RAMs are used for assembler, compiler and user programmes.