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TYPES OF COMPUTER MEMORY
The computer memory can be classified into two types:
Primary Memory Secondary Memory
Computer Memory
Primary Memory Secondary Memory
Hard Disk CD DVD Pen Drive
RAM ROM
Blue-Ray Disc Memory Card
PRIMARY MEMORY
Primary memory is the main memory of the computer. It is also known as internal memory.
It holds the data and instructions that the computer is currently working on and makes it
easily accessible for the CPU to process.
Primary memory is further divided into two types:
Random Access Memory (RAM)
RAM is a volatile memory. The data or information stored in
this memory is lost when the processing is incomplete or the
computer is turned off. That's why it is also called temporary RAM
memory. There are two types of RAM:
Dynamic Random Access Memory (DRAM)
Static Random Access Memory (SRAM)
Read Only Memory (ROM)
ROM is a non-volatile memory. The data and information stored in
this memory do not lose even if the computer is switched off. It is
permanent in nature. There are three types of ROM:
Programmable Read Only Memory (PROM) ROM
Erasable Programmable Read Only Memory (EPROM)
Electrically Erasable Programmable Read Only Memory (EEPROM)
Computer Memory 9

