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1 Computing

Memory

Core Concepts

On completion of this chapter you will be able to know:
¨ What is Computer Memory? ¨ Types of Computer Memory

¨ Measuring the computer’s memory
Warm Up #Problem Solving

Identify the picture and write its name.
Also colour the picture.

I am a ____________.

In your previous classes, you have learnt about tables, addition, subtraction, etc. It was
your mind (brain) that saved all the information for you in your memory which acted as a
storage device. It this chapter, we shall learn about computer memory.

WHAT IS COMPUTER MEMORY?

CPU is the brain of a computer. It processes all the information it receives through input
devices and stores it in computer memory. The storage capacity of a computer is called its
memory. Computer memory is used for storing data and instructions.

TYPES OF COMPUTER MEMORY
Computer Memory
Computer memory
can be classified Primary Secondary
into two categories. Memory Memory
They are primary
RAM ROM Hard CD- DVD Pen Blu-ray Memory
memory and
Disk ROM Drive disc cards
secondary memory.
PROM EPROM EEPROM
Primary memory

Primary memory is also known as the main memory or the internal memory. It is the in-
built memory that is fixed inside the CPU. It stores data or instructions currently used by
the computer. The minimum size of primary memory is 256 MB. We can increase its size
any time.

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