This board decodes a 3 bit binary input to 1 of 8 output. It also has a separate enable input. The board on top is revision D and the board on the bottom is revision A
This board cost $33 in 1968.
Schematic of board as a scanned PDF file.
Feel free to contact me, David Gesswein email@example.com with any questions, comments on the web site, or if you have related equipment, documentation, software etc. you are willing to part with. I am interested in anything PDP-8 related, computers, peripherals used with them, DEC or third party, or documentation.
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