Class 5 Chapter 4 Memory of the computer

Class 5 Chapter 4 Memory of the computer

Answer the following questions:

a. what is computer memory? Write examples.

Ans: Computer memory is the place of the computer where data and instructions are stored. Example: RAM, Harddisk, Pendrive etc.

b. What is primary memory? Write with examples.

Ans: Primary memory is the internal memory of the computer that is fixed on the motherboard. Example: RAM, ROM.

c. What are the differences between RAM and ROM. 

Ans: >>

RAM	ROM
1. It is a volatile memory	1. It is a non-volatile memory.
2. Data are erased when the electricity goes off.	2. Data are not erased when the electricity goes off.
3. It stores currently running program and data ready to process	3. It stores start-up programs and instructions.

d. Write short notes on the hard disk.

Ans: Hard disk is the main and largest data storage device in the computer. It can store a large amount of data permanently. 

e. What is secondary memory? Write with an example.

Ans: Secondary memory is the permanent memory of the computer that is used to store large volumes of data and instructions. example: hard disk, Pendrive, DVD, etc.

f. What is meant by optical storage device?

Ans: Optical storage device means the laser beams are used to read data from it and to write data into it.

g. What is meant by firmware?

Ans: The programs stored in ROM are called firmware.

h. Write any four differences between primary memory and secondary memory.

Ans: >> 

Primary Memory	Secondary Memory
1. It is directly connected to the motherboard	1. It is connected to the motherboard with a cable.
2. It is faster than secondary memory.	2. It is slower than primary memory.
3. It is expensive than secondary memory.	3. It is not so expensive.
4. It is a working memory.	4. It is a storage location.