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1. A basic digital computer consists of: 1. input peripherals 2. central processing unit 3. inertial unit 4. memory 5. auto brightness control 6. output peripherals

1, 4, 6 only

2, 3, 4 and 6

1, 2, 4 and 6

1, 2, 3, 4 and 6

2. The permanent memory of a digital computer usually takes the form of

Central Processing Unit

floppy or hard disks whose capacity is measured in mega or gigabytes

Integrated circuits rated in megabytes

shift registers whose capacity is rated in mega or gigabytes

3. In computer terminology a memory which retains its data when power is removed is called:

RAM

ROM

volatile

non-volatile

4. In computer terminology an input peripheral device would be

a hard disk

a screen display unit

a keyboard

a floppy disk

5. In computer terminology “software” refers to

the programme of instructions

the memory system floppy disks, hard disks, etc

the BIOS

the RAM and ROM capacity

6. In a negative logic system

binary 1 is a low level, binary 0 is a high level

binary 1 and binary 0 are equal levels above and below zero

binary 1 is positive, binary 0 is negative

binary 1 is a high level, binary 0 is a low level

7. In computer terminology a memory which loses its data when power is removed is called

non-volatile

non-permanent

non-retentive

volatile

8. The number system which uses the numbers 0 to 9 followed by the letters A to F is

numeric alpha

hexadecimal

octal

alpha numeric

9. The Central Processing Unit (CPU) consists of: 1. input device 2. output device 3. Arithmetic Logic Unit (ALU) 4. Shift Registers 5. Control Unit 6. Hard disk

1, 2, 3 and 5

3, 4, and 6

3, 4 and 5

1, 2, 5, and 6

10. Memory capacity in a digital computer is expressed in

ROM capacity

Bits (Mbits, Gbits)

RAM capacity

Bytes (Mbytes, Gbytes)

11. A group of binary digits handled as a group is referred to as a

giga bit

bits

mega bit

byte

12. The computer language system which uses the base 8 is called

octal

hexadecimal

binary

decimal

13. The computer language in which calculations are carried out and information is stored in memory is

octal

decimal

hexadecimal

binary

14. The computer language system which uses the base 16 is known as

hectadecimal

octal

septagesimal

hexadecimal

15. In computer terminology an output peripheral device would be

a floppy disk

a hard disk

a keyboard

a screen display unit

16. Aircraft data in analog form, before being processed by a computer must be passed through a

analog to digital converter (A to D)

digital to analog converter (D to A)

EPROM

EAROM

17. The two types of binary logic are

positive and reversible

variable and negative

positive and negative

variable and reversible

18. Within the Central Processing Unit, the temporary stores and accumulator which handle the data during processing are called

BIOS

Control Unit

Shift Registers

Arithmetic Logic Unit (ALU)

19. Convert the decimal number 7 to its binary equivalent

100

111

1110

1101

20. In a digital computer binary 1 is represented by +5 volts and Binary 0 by earth. This is an example of

negative logic

bipolar logic

analog system

positive logic

21. In computer terminology “hardware” refers to

the permanent memory system and its capacity

the RAM capacity

the programme of instructions

the digital computer components, keyboard, monitor, CPU, etc

22. Examples of input peripheral devices are: 1. mouse 2. modem 3. printer 4. screen display unit 5. keyboard

1, 2 and 5

2, 3, 4 and 5

1, 2, 3

1 and 5

23. The purpose of the Arithmetic Logic Unit within the Central Processing Unit is to

perform calculations in the binary number system

act as a temporary store for information being processed

perform calculations in the binary, octal or hexadecimal system

perform all clock functions based on the computer clock frequency (clock time)

24. The smallest information element in a digital system is

byte

digit

electron

bit

25. Convert binary 1110 to its decimal equivalent

16

13

14

15

Question Bank

Questions for BASIC COMPUTERS