EEPROM is used in computers and other electronic devices to store small amounts of data when power is removed. EEPROM is also similar to flash memory however, the difference is that EEPROM requires data to be written or erased one byte at a time whereas flash memory allows data to be written or erased in blocks. This makes flash memory faster. EEPROM is used in computers and other electronic devices to store small amounts of data that must be saved when power is removed. EEPROMs are realized as arrays of floating-gate transistors.