Department of Computer Scien

ce and Information Engineering

National Cheng Kung University

HANEL

SEMI-

CONDUCTOR MEMORY

ROM (Read-only Memory)

‰ROM is a type of memory that does not lose its contents when the power is turned off

¾ROM is also called

nonvolatile

memory

‰There are different types of read-only memory

¾PROM ¾EPROM ¾EEPROM ¾Flash EPROM¾Mask ROM