This board contains seven inverters which change a true signal into false. One inverter may be expanded to perform logic with the R001 or R002 ( 19K) board. It performs the same function as the later TTL 7404 hex inverter.
This board cost $24 in 1968.
Schematic of board as a scanned PDF file.
Back to Previous page All of R series PDP-8 board information and pictures
Feel free to contact me, David Gesswein djg@pdp8online.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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