EEPROM stands for Electrical Erasable Programmable Read Only Memory and also referred to as E²PROM. As
name suggest, an EEPROM can be both erased and programmed with electrical pulses. Since it can be both electrically written into and electrically erased,
EEPROM can be rapidly programmed and erased in circuit for reprogramming without removing them from
circuit board.EEPROM is also called a non-volatile memory because when power is turned off
stored data in
EEPROM will not be erased or intact. New EEPROM have no data in it and usually have to program with a programmer before it can be use. Information stored in this type of memory can be retained for many years without a steady power supply.
What is
function of EEPROM? EEPROMs are used to store user programmable information such as: -
• VCR programming information • CD programming information • Digital satellite receiver control data • User information on various consumer products
EEPROM in monitor performs two functions: -
• When a monitor is switch on it will copies all data or information from
EEPROM to
microprocessor. For example,
EEPROM will let
microprocessor know
frequencies at which
monitor is going to operate.
• The EEPROM is used to store
current settings of
monitor. The settings of
monitor will not be erased even when
monitor is turned off. Anytime a change is made in
monitor settings,
microprocessor updates
setting in
EEPROM. When
monitor is turn on again,
stored settings are used to set up
monitor for operation.