Macintosh II
<computer> (Mac II) A version of
Apple's
Macintosh personal computer, released in March 1987, using the
Motorola 68020 CPU, which runs at a higher
clock rate than the
Motorola 68000 used in the original Mac.
The Mac II has a full 32-bit data bus instead of a 16-bit bus.
Mac II models have built-in 40 to 160 megabyte hard disks and can take up to eight megabytes of
RAM (and more as denser memory chips arive).
The Mac II was the first Macintosh to provide a colour graphics option, with up to 256 colours on screen at a 640x480 resolution.
Mac II models are designed for expandability with three (
Macintosh IIcx) or six (II & IIx) built-in
NuBus expansion slots for additional
peripheral and
coprocessor boards.
