Programmable Read-Only Memory (PROM) is a type ofread-only memory (ROM) that can beprogrammed directly by the user using a special PROM programmer. It is a control memory in which stored information can be altered, but not as easily as in ordinary memory.
A PROM that is able to be erased and rewritten is called anEPROM (standing for erasable programmable read-only memory). A PROM that is able to erased and rewritten only using electricity is called anEEPROM (standing for electrically erasable programmable read-only memory).
