Industry Standard Architecture (ISA)

ISA was introduced by IBM and was originally an 8-bit computer bus that was later expanded to z 16-bit bus in 1984. when this bus was originally released it was a proprietary bus, which allowed only IBM to create peripherals and the actual interface. However, in the early 1980’s other manufacturers were creating the bus.

In 1993, Intel and Microsoft introduced a PnP ISA bus that allowed the computer to automatically detect and setup computer ISA peripherals, such as a modem or sound card.