This document is a worksheet about computer storage devices for a 7th grade computer studies class. It contains questions about different storage units like RAM, ROM, hard disks, floppy disks, zip drives, CDs, DVDs, and flash drives. Students are asked to fill in missing information like storage sizes and provide advantages and disadvantages of each type of storage device.

1. 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.
1 | P a g e
i. Hard disk are measured in ________________
ii. Give TWO advantages and disadvantages of using a hard disk.
1. __________________________________________________________
2. __________________________________________________________
1. __________________________________________________________
2. __________________________________________________________

2. Name : __________________________________________ Class : ______________ Date: ___________________
5.
2 | P a g e
i. Floppy disks can hold data up to ________________
ii. Give TWO advantages and disadvantages of using a Floppy Disk / Diskette.
1. __________________________________________________________
2. __________________________________________________________
1. __________________________________________________________
2. __________________________________________________________

3. Name : __________________________________________ Class : ______________ Date: ___________________
6.
7.
3 | P a g e
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. __________________________________________________________

4. Name : __________________________________________ Class : ______________ Date: ___________________
8.
4 | P a g e
i. DVD can holds data up to ________________.
ii. DVD stands for ____________________________________________.
iii. Give ONE advantage and disadvantage of using a DVD.
Advantage - __________________________________________________
Disadvantage - _______________________________________________

5. Name : __________________________________________ Class : ______________ Date: ___________________
9.
5 | P a g e
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 - _______________________________________________

6. Name : __________________________________________ Class : ______________ Date: ___________________
9.
5 | P a g e
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 - _______________________________________________