There are Two types of Memory in Computer System
These name as follows :
1) Primary Memory
2) Secondary Memory
1) Primary Memory :
Primary memory
is internal memory of the computer.
It is also known as main memory.
Primary Memory holds the data and
instruction on which computer is
currently working.
Types of Primary Memory–
Primary memory is generally of two types.
1. RAM
2. ROM
1. RAM (Random Access Memory):
It stands for Random Access Memory. RAM is known as read /write memory. It is generally referred to as main memory of the computer system. It is a temporary memory. The information stored in this memory is lost as the power supply to the computer is switched off. That’s why RAM is also called as “Volatile Memory”.
2. ROM (Read Only Memory) :
It stands for Read Only Memory. ROM is a Permanent Type memory. The content is not lost when power supply is switched off. Content of ROM is decided by the computer manufacturer and permanently stored at the time of manufacturing. ROM cannot be overwritten by the computer. It is also called “Non-Volatile Memory”.
2) Secondary Memory :
It is an external memory of the computer. It is used to store the huge amount of different programs and information. The secondary storage devices are :
1. Magnetic (Hard) Disk
2. Magnetic Tapes
3. Pen Drive
4. Flash memory
5. Optical Disk (CD,DVD)
6. SSD etc.
