(Mac II) A verSion of Apple' SMacintoShperSonal computer, releaSed in March 1987, uSing the Motorola 68020CPU, 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 NuBuSexpanSion SlotS for additional peripheral and coproceSSor boardS. (1996-05-25)
