EEprom IC’s

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EEPROM (also written E2PROM and pronounced "e-e-prom," "double-e prom,") stands for Electrically Erasable Programmable Read-Only Memory and is a type of non-volatile memory which used in   TV,Computers and other electronic devices to store small amounts of data that must be saved when power is removed.EEPROM is a special type of PROM. EEPROM can be both erased and programmed with electrical pulses.Since it can be both electrically written into and electrically erased, the EEPROM can be rapidly programmed and erased in circuit for 

reprogramming without removing them from the live circuit board.EEPROM will not be erased or intact automatically. New EEPROM have no data it  self and usually need to program with a programmer before it  use. Information stored in this type of memory can be retained for many years without a steady power supply.

EEPROMs are used to store user programmable information.
• When a device is switch on it will copies all data or information from the EEPROM to the microcontroller (MCU). For example, the EEPROM will let the microcontroller know the frequencies at which the monitor is going to operate.
• The EEPROM is used to store the current settings of the device. The settings of the device will not be erased even when the device is turned off. Anytime a change is made in the device settings, the microcontroller updates the setting in the EEPROM. When the device is turn on again, the stored settings are used to set up the device for operation.