Working of Flash Memory - Electronic Circuits and Diagrams Flash memory is a type of electrically erasable programmable read-only memory [EEPROM] chip that can be used for the transfer and permanent storage of digital data. It is actually a long-term persistent storage computer storage device that can be electrically erased and reprogrammed.[PDF] Flash Memory Technology - Introduction Flash memory technology is a mix of EPROM and EEPROM technologies. The term ÒflashÓ was chosen because a large chunk of memory could be erased at one time. The name, therefore, dis-tinguishes flash devices from EEPROMs, where each byte is erased individually. Flash memory technology is today a mature technology.