Contec Bi Directional TTL Digital I/O Board PIO-96W(PC) No.9615C

The Contec PIO-96W(PC) Bi-Directional TTL Digital I/O Board is a full-size IBM PC/AT add-on board that provides 96 fully programmable, bi-directional TTL-level input and output channels. All 96 channels are divided into four separate 24 channel groups. This board has four 8255-5 programmable peripheral interface ICs that can be programmed with the 8255A PPI's Mode 0 to Mode 2 operation.