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KS3 Principles of Computer Science – Midpoint Assessment

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

What is the binary number system based on?

a)

8 digits

b)

2 digits

c)

10 digits

d)

16 digits

2.

Which of the following is a logic gate?

a)

AND

b)

ADD

c)

SUBTRACT

d)

MULTIPLY

3.

What does ASCII stand for?

a)

American Standard Code for Information Interchange

b)

Advanced System for Computer Input

c)

Automatic Serial Code for Internet Information

d)

Analogue Signal Code for Input

4.

Which of these is an input device?

a)

Keyboard

b)

Printer

c)

Monitor

d)

Speaker

5.

Which of these is an output device?

a)

Mouse

b)

Monitor

c)

Microphone

d)

Scanner

6.

What is the decimal (denary) value of the binary number 1010?

a)

8

b)

10

c)

12

d)

5

7.

Which computer component is known as the 'brain' of the computer?

a)

Hard drive

b)

CPU

c)

RAM

d)

Power supply

8.

What does a NOT gate do to its input?

a)

Leaves it unchanged

b)

Reverses it

c)

Adds 1 to it

d)

Multiplies it by 2

9.

Which of the following is used to store data permanently?

a)

RAM

b)

Hard drive

c)

CPU

d)

Cache

10.

How many bits are in a byte?

a)

2

b)

4

c)

8

d)

16

11.

Which logic gate outputs 1 only if both inputs are 1?

a)

OR

b)

AND

c)

NOT

d)

NAND

12.

What is the ASCII code for the capital letter 'A'?

a)

65

b)

97

c)

66

d)

64

13.

Which of these is NOT a basic computer component?

a)

CPU

b)

RAM

c)

Keyboard

d)

Television

14.

What is the main function of RAM in a computer?

a)

Store data permanently

b)

Store data temporarily while the computer is running

c)

Display images

d)

Print documents

15.

Which logic gate outputs 1 if at least one input is 1?

a)

AND

b)

OR

c)

NOT

d)

NOR

16.

What is the binary representation of the decimal number 7?

a)

111

b)

101

c)

100

d)

110

17.

Which device is used to convert digital signals to analogue for output?

a)

Monitor

b)

Speaker

c)

Keyboard

d)

Mouse

18.

How many possible values can a single binary digit (bit) have?

a)

1

b)

2

c)

4

d)

8

19.

Which of the following best describes data representation in computers?

a)

Using only letters

b)

Using binary numbers

c)

Using pictures

d)

Using sounds

20.

Which of these is an example of an output device?

a)

Microphone

b)

Mouse

c)

Printer

d)

Joystick

21.
What kind of gate is this?
a)
AND
b)
NOT
c)
OR
d)
XOR
22.
What kind of gate is this?
a)
AND
b)
NAND
c)
OR
d)
XAND
23.
What kind of gate is this?
a)
OR
b)
XOR
c)
NOR
d)
AND
24.

What is OUTPUT?

a)

1

b)

0

25.

What is OUTPUT?

a)

1

b)

0

26.

What is OUTPUT?

a)

1

b)

0

27.

What is OUTPUT?

a)

1

b)

0

28.

What is OUTPUT?

a)

1

b)

0

29.

What is the 8-bit binary representation of the denary number 128?

a)

01111111

b)

00000001

c)

10000000

d)

11111111

30.

Is this device Input or Output?

Printer

a)

Input

b)

Output

31.
Is this device Input or Output?
Speaker
a)
Input
b)
Output
32.
Is this device Input or Output?
Mouse
a)
Input
b)
Output
33.

Is it an input or output device?

a)

Input

b)

Output

c)

Input and output

d)

I don't know

34.

Is it an input or output device?

a)

Input

b)

Output

c)

Input and output

d)

I don't know

35.

An example of software would be...

a)

Google Sildes

b)

keyboard

c)

monitor

d)

printer

36.

Identify the given part.

a)

RAM

b)

POWER SUPPLY

c)

MICROPROCESSOR

d)

HARD DISK

37.

RAM is a _____________.

a)

Processor

b)

Memory Chip

c)

CPU

d)

input device

38.

This is the main electronic circuit board.

a)

RAM

b)

Motherboard

c)

Microprocessor

d)

Power Supply

39.

Name the part.

a)

HRAD IDSK

b)

HARD DISK

40.

What is the binary representation of the decimal number 10?

a)

1010

b)

1111

c)

1001

d)

1100

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