This is a 4 layer PCB with double sided edge connectors at the front and rear. The top is populated with DIP integrated circuits and a variety of discrete components including many metal can transistors. The left card extractor has "ID(16K)" stamped on it. This board is part of the memory controller for an HP2100 minicomputer.
Date
1973
Manufacturer
Hewlett-Packard Company (HP)
Identifying Numbers
Other number
02100-80009
Board blank number Etched in front corner on top of board
Other number
6-73
Stamped near rear corner on top of board
Other number
A 1049 22
Revision number Stamped in front corner on top of board