programmable read-only memory

Computing Dictionary

Programmable Read-Only Memory definition

storage
(PROM) A kind of ROM which can be written using a PROM programmer. The contents of each bit is determined by a fuse or antifuse. The memory can be programmed once after manufacturing by "blowing" the fuses, which is an irreversible process. Blowing a fuse opens a connection while blowing an antifuse closes a connection (hence the name). Programming is done by applying high-voltage pulses which are not encountered during normal operation.
(1995-04-22)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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