CLASS-2 COMPUTER L-4 COMPUTER MEMORY AND STORAGE

BOOK EXERCISE

A. Tick () the correct options. 1. Which of the following is not a primary memory? a. Hard disc () b. RAM ( ) c. ROM ( ) 2. Which of the following is a portable secondary storage device? a. DVD ( ) b. Pen drive () c. Hard disk ( ) 3. Which secondary storage device is fixed inside the system unit? a. Hard disk () b. Portable hard disk ( ) c. Pen drive ( ) 4. Which of the following stores the least amount of data? a. DVD ( ) b. CD () c. Portable hard disc ( ) 5. Which of the following is a read only memory? a. pen drive ( ) b. ROM () c. Chip ( )

B. Fill in the blanks.

RAM binary primary chip hard disk

1. The computer memory comes in the form of chip and disks. 2. The RAM is a type of main memory. 3. The hard disk is fixed inside the system unit. 4. The primary memory is also called the main memory. 5. The digits 0 and 1 are called binary digits. CLASS-2 COMPUTER L-4 COMPUTER MEMORY AND STORAGE

C. Match the following columns: COLUMN A COLUMN B

1. a. Hard disk (5)

2. b. pen drive (3)

3. c. CD (1)

4. d. ROM (4)

5. e. portable hard disk (2)

D. Find the missing letters to form words. 1. D A T A 2. C O M M A N D S 3. M E M O R Y 4. B I N A R Y E. Answer in one word. 1. It is a secondary storage device. It is fixed inside the system unit. Hard disk 2. It is a primary memory. You can only read it. ROM 3. It is a temporary storage device. It comes in the form of a chip. RAM 4. It is small, lightweight and portable. It stores less data than a hard disk. Pen drive CLASS-2 COMPUTER L-4 COMPUTER MEMORY AND STORAGE

F. Expand the following terms: 1. CPU- Central Processing Unit 2. ROM- Read Only Memory 3. CD- Compact Disc 4. RAM- Random Access Memory 5. DVD- Digital Versatile/Video Disc CLASS NOTES

G. Answer the following questions: 1. What is data? Ans. Any number or text that you enter into a computer is called data.

2. What are commands? Ans. The instructions given to the computer to perform a task are called commands.

3. Define computer memory. Ans. The storage area of a computer where it stores all the data and instructions is known as computer memory.

4. Write two lines about primary memory.  The primary memory is the main memory of the computer.  There are two types of primary memory- RAM and ROM.

5. Name any two secondary storage devices.  Hard disk  Pen drive