R series PDP-8 board information and R151 Binary to Octal Decoder

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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.

Back of board ( 2k)

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