IBM's second generation of personal computers.
The PS/2 series introduced three advances over the PC series:
3.5" 1.44 megabyte
microfloppy disks,
VGA and
8514
graphics
display standards, and the
Micro Channel bus
architecture. The 3.5" disks and VGA can be easily installed
on other PCs and will become the standard for new compatible
computers. The Micro Channel bus allows for multiprocessing
and less aggravation, but cannot be retrofitted to older PCs.
PS/2 models 25 and 30 are
ISA, other models have Micro
Channel and
ESDI.