Cherry M8, MD and MJ examples
Examples of keyboards with M8, MD and MJ switches. These are arranged in approximate order of manufacture based on date and serial number.
For customer part number and system details, see the master vintage Cherry keyboards list.
Switch models listed are purely assumptions. M81 is assumed for triangular prisms, as M81 and M82 cannot be differentiated without an extreme close-up photograph.
Keyboard | From | Serial | Date | Switches | Variants | Spacing | System | Reference | Notes |
---|---|---|---|---|---|---|---|---|---|
UB88-0005 | Harpenden, UK | 1981-11-24 | 14811 | M8 12 mm covered | LED | ~15 mm | Deskthority | ||
U01-0114 | Auerbach, DE | ca. 1982 | 2030 | M8 6 mm open, M81? | LED Stable |
¾″ | Basis 108 | Deskthority | |
UB70-0047/A | Harpenden, UK | 1984-04-13 | 040664 | M8 6 mm open, M81? | LED | Wren Executive Computer | eBay | ||
UB88-0016 | Harpenden, UK | 1984-06-01 | 043167 | M8 6 mm covered | LED | ~15 mm? | Deskthority | ||
UB88-0008 | Harpenden, UK | ca. 1984 | 046608 046612 |
M8 6 mm covered | LED | ~15 mm | bbs.wstx.com | Uses a National Semiconductor COP402N ROM-less microcontroller paired with a National Semiconductor MM2758Q-A 8 kilobit EPROM. | |
G80-0662/03 | Auerbach, DE | 1988? | 3174 A12 | M84A-0100 M84A-01R0 |
LED | ¾″ | Deskthority | The TTL ICs are dated 1984, the controller is either 1981, 1986 or 1991, and the “A” code implies 1988. |