Plug Compatible Manufacturer
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<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?]
Nearby terms: PLTL « plug and play « plug and pray « Plug Compatible Manufacturer » Pluggable Authentication Module » plugh » plug-in
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