This slide will present you the types of memory in computer system and you will understand the difference between primary and secondary memory easily. i explain the topic in easier and efficient way so you can understand easily.

1. CATEGORY OF MEMORIES
By Nouman Baloch

2. Types of memory in computer
 Memory is divided into two big clusters.
 1) Primary Memory
 2) Secondary Memory

3. Primary Memory
 Primary Memory (also called main memory),
is used for immediate access of data by the
processor.
 Primary memory further divided into two
types.
 1) RAM(Random Access Memory)
 2) ROM(Read Only Memory)

4. RAM (Random Access Memory)
 RAM is a memory within the computer
responsible for storing data temporary . CPU
can access data directly from RAM .It is
volatile in nature, which means that data will
be erased once supply to the storage device is
turned off.

5. ROM (Read Only Memory)
 Unlike RAM, ROM is a permanent form of
storage. ROM stays active regardless of
whether power supply to it is turned on or off.

6. Secondary Memory
 Secondary memory is available on mass
storage devices for permanent data storage.
Data stored on a secondary device is retained
even when it is not supplied any power. Some
examples of secondary memories are given in
next slide.

7.  1) MagneticTape 2) Floppy Disk
 3) Hard Disk 4) USB Pen Drives

8. Any
Question
please ask?