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Programmable Read Only Memory (PROM)
As its name implies, this
type of ROM can be programmed using special
equipment. However, PROM's can be programmed only
once. The advantage of this type of ROM
is that it can be programmed with many different
types of software and does not rely
on hard wiring the logic for the program
into the chip itself.
The process of programming
a PROM is known as "burning." Programming
a PROM is analogous to burning a CD-R (Chapter
0110). The media is written to once, and
can be read many times. This technology
is known as Write Once Read Many, or WORM
technology. Again, the industry began demanding
a better technology of ROM that could be erased
and programmed again. Enter the Erasable Programmable
Read Only Memory, or EPROM.
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CertiGuide to A+ (Core Hardware) (http://www.CertiGuide.com/aplush/) on CertiGuide.com
Version 1.0 - Version Date: December 6, 2004
Adapted with permission from a work created by Tcat Houser.
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