A smaller version of the original AT motherboard used in the IBM PC/AT. Introduced in 1987 ... Widely used in 386, 486 and early Pentium PCs, the Baby AT was superseded by the ATX motherboard.

In late 1989, the 486 came out, offering faster speed and ... See 286. The original PC launched by IBM in 1981 used Intel's 16-bit 8088 CPU. This chip family was designed so that the installed ...