Peripheral mass memory unit for data processor - uses rapid access semiconductor elements via memory gas and I=O interface

摘要

The external input/output data signals (16) are connected to the memory unit via an internal microprocessor (15). The processor and volatile memory modules (18) are fed with d.c. rails (20) by a mains power supply (19) and back-up power sources (21). The address and data read and write signals are fed from the processor (15) via a memory bus (17). The processor consists of an input/output interface, control circuit fed by an internal bus, CPU, clock, scrath-pad RAM, program ROM, address decoder and buffer circuit. The memory modules consist of a memory address decoder, memory buffer and a memory element.