What Does Industry Standard Architecture (ISA) Mean?
Industry Standard Architecture (ISA) is a computer bus specification used for 8-bit IBM-compatible systems. An ISA bus provides a basic route for peripheral devices that are attached to a motherboard to communicate with different circuits or other devices that are also attached to the same motherboard.
Techopedia Explains Industry Standard Architecture (ISA)
Initially, an ISA bus was the best option for Intel machines. However, eventually a faster and wider bus was required, and an issue of incompatibility arose. The manufacturers relied on the same ISA bus but added 16-bit characteristics.
