This document discusses different types of computer memory. It separates memory into primary and secondary categories. Primary memory includes RAM such as SRAM and DRAM, as well as ROM variants like PROM, EPROM, and EEPROM. Secondary memory consists of storage like magnetic tapes, floppy discs, flash discs, optical discs, and hard drives.

1. COMPUTER
MEMORY
PRIMARY
MEMORY
RAM
PROM
EPROM
EEPROM
ROM
SRAM
DRAM
SECONDARY
MEMORY
MAGNETIC TAPE
PUNCHING
DEVICE
FLOPPY DISC
FLASH DISC
OPTICAL DISC
HARD DRIVE