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Keyboard–switch database Grass Valley Group 151-KEYBOARD

Brand Grass Valley Group
Manufacturer Cherry
Model 151-KEYBOARD
Part number 097016-03 (external)
KBA-G7027D (internal)
Switches Cherry MX Black
Serial number 51251P (external)
51714 (internal)
Year (IC) 1991
Year (PCB) 1992
Reference https://klikkyklik.wordpress.com/2015/11/12/inside-the-vpe-151/
Notes Oh boy, this is complicated. It was made for Grass Valley Group by TG3, and made for TG3 by Cherry. The controller appears to be dated 1984 or 1987 and another chip is copyright 1988, but the Motorola SN74LS373N is dated 9125, so I am taking this IC date as it ties in with the reported date of manufacture.

There are also two internal part numbers: KBA-G7027D (presumably Cherry) and EA-2191-03 (TG3), and two serial numbers: 51714 (inside) and the strangely very similar 51251P (outside).

Created by Daniel on 2016-01-27