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 (166K) 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.
PDP-8 Home Page PDP-8 Site Map PDP-8 Site Search