Name : __________________________________________ Class : ______________ Date: ___________________

Computer Studies YEAR 7 - Storage devices Exercise 3 Category: Could Do

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.

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

1. __________________________________________________________2. __________________________________________________________1. __________________________________________________________2. __________________________________________________________

Name : __________________________________________ Class : ______________ Date: ___________________

5.

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

1. __________________________________________________________2. __________________________________________________________1. __________________________________________________________2. __________________________________________________________

Name : __________________________________________ Class : ______________ Date: ___________________

6.

7.

8.

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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 - _______________________________________________

Name : __________________________________________ Class : ______________ Date: ___________________

9.

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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 Flash disk.

Advantage - __________________________________________________Disadvantage - _______________________________________________