exercise 2

Name : ___________________________ Class : ______________ Date: _________________________

Computer Studies YEAR 7

STORAGE DEVICES (Exercise 2)

1. All the data and instruction in the computer are measured in _________________.

2. Study the storage sizes and answer the question.

1 bit =_________________ 1 Byte = ______________

8 bit = _________________ 1000 Kilobytes (KB) = ____________

1000 bytes = __________________ 2 Gigabytes (GB) = ___________________

1 Megabytes (MB) = _________________

1000 Megabytes (MB) = __________________

3. Underline the correct answer.i. Random Access Memory (RAM) is also called (Volatile memory / Non-volatile memory).ii. Read Only Memory (ROM) is also called (Volatile memory / Non-volatile memory).

4.i. Hard disk are measured in ________________ii. Give TWO advantages and disadvantages of using a hard disk.

1. __________________________________________________________2. __________________________________________________________1. __________________________________________________________2. __________________________________________________________

5. i. Floppy disks can hold data up to ________________ii. Give TWO advantages and disadvantages of using a Floppy Disk / Diskette.

1. __________________________________________________________2. __________________________________________________________1. __________________________________________________________2. __________________________________________________________

6.

7.

8.

i. Zip Drive can holds data up to ________________ii. Give ONE advantage and disadvantage of using a Zip drive.

Advantage - __________________________________________________Disadvantage - _______________________________________________

i. CD-ROM can holds data up to ________________ii. What are the differences between CD-ROM and CD-RW.

____________________________________________________________________________________________________________________________________________________________________________________

iii. Give TWO advantages and disadvantages of using a CD-ROM.1. __________________________________________________________2. __________________________________________________________1. __________________________________________________________2. __________________________________________________________

i. DVD can holds data up to ________________.ii. DVD stands for ____________________________________________.iii. Give ONE advantage and disadvantage of using a DVD.

Advantage - __________________________________________________Disadvantage - _______________________________________________

9. i. State the features of a Flash disk.______________, ______________, ______________, _____________

ii. Flash Disk nowadays can hold data up to __________________.iii. Give ONE advantage and disadvantage of using a Flashdisk.

Advantage - __________________________________________________Disadvantage - _______________________________________________