Contents:
- MAI Computer Systems
- Magnetic Components Ltd
- Mannesman
- Marcol Business Machines
- MDB Systems
- MDS Data Processing
- Mechtric Eng. Ltd
- Megatek Corporation
- Melcom Systems (UK)NAHC/TC56
- MEL Equipment Ltd
- Mellordata
- Membrain
- Memorex
- Merck & Hollander Ltd
- Metals Research Ltd
- Metropolitan Vickers
- Microcell Electronics
- Microcomputer Associates Inc