PC/104 is a embedded computer standard, intended for specialized embedded computing environments where applications depend on reliable data acquisition despite an often extreme enviroment. The PC/104 form factor has no backplane and allows modules to stack together like building blocks, which is more rugged than typical bus connections in PCs.
The PC/104 computer bus utilizes 104 pind, which include all normal lines used in the ISA bus, with additional ground pins added to ensure bus integrity.
Examples of PC/104 Cards
Enhanced Bit Rate-1553 BC/RT/MT PC/104 Card (BU-65580/81CX)