<
company> (PCM) A
manufacturer of equipment that some other
manufacturer's system can identify and work with. The PCM's
device replaces the original manufacturer's.
Most PCMs competed with
IBM. PCM devices normally offer a
cost-performance benefit over the original device. For
example, several PCM versions of the {Direct-Access Storage
Device}
IBM 3350 offered twice the storage and improved data
access (dual port).
Plug compatible devices include replacement
CPUs, such as
the
Hitachi 7/90 series (which could be substituted for {IBM
3090} series processors),
I/O subsystems, and {dumb
terminals} like the
IBM 3270.
[
Used outside mainframe market?]
(2003-06-24)