This board is a pulse amplifier which converts input pulses to the standard 0 to -3V 100 nanosecond pulse. The R series logic uses pulses for clocked functions such as registers. Modern logic normally uses edge triggered registers or level sensitive latches.
This board cost $28 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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