Before revision: EPROM (Erasable programmable read-only memory ) In this type the data in it can be rewritten by removing the chip from the circuit board, exposing it to an ultraviolet light to erase the existing data, and plugging it into a PROM programmer.
After revision: or UVEPROMEPROM (Erasable programmable read-only memory ) In this type the data in it can be rewritten by removing the chip from the circuit board, exposing it to an ultraviolet light to erase the existing data, and plugging it into a PROM programmer.