Custom RS232C serial Eurocard

[Index by function] 

Custom serial card front

Custom serial card (front)

Custom serial card back

 Custom serial card (back)

 This custom serial card comes from a System 3 computer where it is used to provide RS232 data via a 25-way D type connector. it can directly drive a PC coms port through a null modem cable. The PC ran Hyperterm and was used as the System 3 keyboard and screen.