< CP/M actually stands for Control Program/Monitor. Yes. Taken from the first paragraph of An Introduction to CPM features and facilities version 1.4 1976. (my V1.4 manual!) QUOTE: CP/M is a monitor control program for microcomputer system development which uses IBM-compatable flexible disks for backup storage. Using a mainframe based upon Intel's 8080 microcomputer, CP/M provides a general enviornment for program construction, storage, and editing, along with assembly and program check-out facilities. It goes on from there. < While I don't know for sure, I suspected PL/M stands for Programming < Language/Monitor and not Programming Language/Microprocessor. No, PL/M is Programming Language/Microprocessor It derives it's structure from PL/1 and can be viewd as an integer version of it like smallc is to full C. < By 1978, Sharp and Zenith had yet to even create computer divisions, le < alone have computers running CP/M. Zenith at the time was doing TVs and would later aquire Heathkit who did already have products (H8 and H11). generally speaking the japanese companies like Sharp, NEC, Epson and other would be a bit later. Allison