ROM VS Programmable ROM

ROM

Short for Read-Only Memory, ROM is memory that is capable of holding data and being read from; however, it is not capable of being written to or having its data modified. Unlike RAM, ROM is non-volatile and capable of keeping its contents regardless if it has power or not. A good example of PROM is the computer BIOS as shown in the example picture to the right.

 

 

Programmable ROM

Short for Programmable Read Only Memory, Programmable ROM, or PROM is a computer memory chip capable of being programmed. Once the PROM has been programmed, the information written is permanent and cannot be erased or deleted. A good example of a PROM is the computer BIOS.