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WorksheetsUnderstanding Computers
Total questions: 29
Worksheet time: 58mins
Name
Class
Date
1.
Which of the following is computer hardware?
a)
Monitor
b)
Scanner
c)
Keyboard
d)
All of the above
2.
Which of the following is an input device?
a)
A computer monitor
b)
A mouse
c)
A CD
d)
A printer
3.
Which of the following is an output device?
a)
A keyboard
b)
A hard disk
c)
A CD ROM
d)
A computer monitor
4.
Which of the following is a storage device?
a)
A CD
b)
A laser printer
c)
RAM (Random Access Memory)
d)
A scanner
5.
Which of the following is an input device?
a)
A camera
b)
A speaker
c)
A flash drive
d)
An inkjet printer
6.
Which of the following is an output device?
a)
A lift button
b)
A joystick
c)
A laser printer
d)
A scanner
7.
Which of the following is computer software?
a)
Touch screen
b)
Microsoft Windows
c)
Printer
d)
Floppy disc
8.
A CD is
a)
A magnetic storage device read by magnetised read-write head
b)
An optical storage device read by a laser beam
c)
A magnetic storage device read by magnetised read-write head
d)
A magnetic storage device read by a laser beam
9.
On a CD ROM
a)
Data is written in concentric circles
b)
You can write data to the disk more than once
c)
Pits and Lands are used to represent 1s and 0s
d)
All data is represented in ASCII
10.
What would be a suitable device to transfer 12 photos from one PC to another?
a)
A memory stick
b)
A CD ROM
c)
A scanner
d)
A printer
11.
Computer memory that temporarily stores information is called:
a)
CPU
b)
RAM
c)
ROM
d)
ASCII
12.
Approximately how many cycles per second in 1Gigahertz (GHz)?
a)
100
b)
100000
c)
1 million
d)
1 billion
13.
Approximately how many cycles per second in 1Megahertz (MHz)?
a)
1000
b)
100000
c)
1 million
d)
1 billion
14.
Which of the following is likely to be held in Random Access Memory (RAM)?
a)
Start-up instructions used when a PC is switched on
b)
A document that the user is typing in Word
c)
Washing programs used in a washing machine
d)
Documents deleted by the user
15.
Which of the following is likely to be held in Read Only Memory (ROM)?
a)
Start-up instructions used when a PC is switched on
b)
Software such as Word while a user is typing a document
c)
A film loaded from a DVD
d)
A document saved by the user for permanent storage
16.
What is the function of the Central Processing Unit (CPU)?
a)
To act as a temporary data store
b)
To act as a permanent data store
c)
To hold computer programs while they are being executed
d)
To fetch, decode and execute instructions
17.
Moore’s Law states that:
a)
Memory capacity in a computer will double every ten years
b)
Memory capacity in a computer will double every two years
c)
Processor speed can never exceed 10GHz
d)
Processor speed depends on memory capacity
18.
A single binary digit is known as
a)
A bit
b)
A byte
c)
A character
d)
An integer
19.
How many bits in a byte?
a)
2
b)
4
c)
8
d)
100
20.
How many bytes in a Kilobyte (Kb)?
a)
1000
b)
1024
c)
1000000
d)
1048576
21.
What number system do computers use?
a)
Binary
b)
Denary
c)
Decimal
d)
ASCII
22.
How many different binary codes can be represented in 2 bits?
a)
2
b)
4
c)
8
d)
16
23.
The binary number 1010, converted to denary (decimal) is
a)
2
b)
3
c)
10
d)
18
24.
The binary number 00010001, converted to denary (decimal) is:
a)
3
b)
17
c)
101
d)
10001
25.
The binary number 00110011, converted to denary (decimal) is:
a)
4
b)
33
c)
51
d)
99
26.
The binary number 00001001, multiplied by 2 is
a)
00010010
b)
00001010
c)
00000100
d)
00010011
27.
The binary number 0011 0100, divided by 4 is
a)
00010100
b)
11010000
c)
00001101
d)
00011010
28.
The binary number 0011 0100, added to 0001 0010 is
a)
01000110
b)
00100000
c)
00100110
d)
01110110
29.
The binary number 0001 0100, added to 0000 0011 is
a)
00111000
b)
01110001
c)
00100111
d)
00010111
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