May 2024
Intermediate to advanced
665 pages
23h 2m
English
book
The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
by Lyla B. Das
Content preview from The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
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444 THE x86 MICROPROCESSORS
12.4.1 | EPROM
EPROMs are ‘Erasable and Programmable’ – their contents can be erased by exposing them to
ultraviolet radiation. Such ROMs have a window through which UV light penetrates the chip.
12.4.2 | EEPROM
is is ‘Electrically Erasable’ PROM, and erasure can be done while the chip is on the circuit
board. e predominant feature of EEPROM is that the programmer can change the data
embedded on the memory one byte at a time, giving him more control on how he enters the
data. However, this method takes a very long time especially when erasing all the data in it.
EEPROM was used largely in electronics that are programmed only a few times before shipping
but can then be updated via patches. An example of this ...
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