| 释义 |
Macintosh II
Macintosh II (computer)(Mac II) A version of Apple's Macintoshpersonal computer, released in March 1987, using theMotorola 68020 CPU, which runs at a higher clock ratethan the Motorola 68000 used in the original Mac. The MacII has a full 32-bit data bus instead of a 16-bit bus. Mac IImodels have built-in 40 to 160 megabyte hard disks and cantake up to eight megabytes of RAM (and more as denser memorychips arive).
The Mac II was the first Macintosh to provide a colourgraphics option, with up to 256 colours on screen at a 640x480resolution. Mac II models are designed for expandability withthree (Macintosh IIcx) or six (II & IIx) built-in NuBusexpansion slots for additional peripheral andcoprocessor boards. |