What is the Data Bus used for?

Transfers binary data from place to place

What are registers used for?

individual storage that hold an instruction, data or address

What is the address bus used for?

This carries the binary address of memory locations

What is the control bus used for?

Sends and receives signals that control the CPU/components

What is the Instruction Register used for inside a CPU?

holds the instruction that is currently being executed

What is the accumulator used for?

This stores the total of results performed in the ALU.

What is a heat sink used for?

used to remove excess heat that is built up in the CPU.

What are the 3 main components of the CPU?

Control Unit, Arithmetic and Logic Unit, Registers

What is the program counter used for?

holds the address of the NEXT instruction to be executed

Put the following in order of size: megabyte, nibble, byte, bit, gigabyte

bit, nibble, byte, megabyte, gigabyte

What is the purpose of the ALU?

carries out Mathematical operations and calculations

What is the system bus?

connects the major components of a computer system together.

What is VOLATILE memory?

data is lost when the device is no longer receiving power

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GCSE Computing - How Computers Work 40 Questions

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Questions 37

Answers

1
What is the Data Bus used for?
Allows the computer to communicate with other computers
Transfers binary data from place to place
This is used to send data across the internet
This carries the binary address of memory locations
2
Convert the binary number: 0110 1100 to HEX:
6B
6C
6A
6D
3
What are registers used for?
used for identification for the CPU to process data.
individual storage that hold an instruction, data or address
registers are used to do marks with the CPU
used to find out what letters or codes are on a computer.
4
Is a programming language an INPUT, PROCESS, OUTPUT or NONE?
OUTPUT
NONE
INPUT
PROCESS
5
Which of these is NOT a type of system bus?
Data bus
Control bus
Process bus
Address bus
6
What is the address bus used for?
This carries the binary address of memory locations
Transfers binary data from place to place
Allows the computer to communicate with other computers
allows your PC address to be communicated over the internet.
7
What is the control bus used for?
Sends binary data from place to place.
sends control signals to other computers other the internet.
Sends and receives signals that control the CPU/components
Sends control signals over a network to other PCs
8
What is an OPCODE?
An instruction to retreive specific data from memory
Data used for an instruction
An Instruction
A control signal send by the CPU.
9
An actuator is a type of motor,is this an INPUT, PROCESS, OUTPUT or NONE?
NONE
OUTPUT
PROCESS
INPUT
10
What is the Instruction Register used for inside a CPU?
holds the address of the NEXT instruction to be executed
holds the address of the instruction that is being executed
holds the instruction that is currently being executed
holds the NEXT instruction that will be executed
11
What user interface is this "Must type in 'text commands' to give the computer instructions"
Graphical User Interface
Command Line Interface
Command Text Interface
Text Line Interface
12
How many NIBBLES are there in a byte?
1
2
8
4
13
Which of these is NOT an INPUT device
mouse
keyboard
printer
motion sensor
14
What is the accumulator used for?
carries out Mathematical operations and calculations
holds the NEXT instruction that will be executed
This stores the total of results performed in the ALU.
holds the instruction that is currently being executed
15
"Uses metal platters that rotate at high speed, Small parts of the platter can be magnetised."
Optical
Hard Drive
Solid State
Magnetic
16
What is the maximum number of addressable memory locations if the address bus is 8 BITS.
1024
16
8
256
17
Which of these is NOT a function of the operating system
Network Management
Resource Management
Desktop Management
User Management
18
Convert the HEX: 2A to Decimal:
43
41
42
40
19
Which of these is NOT an OUTPUT device
speaker
monitor
webcam
printer
20
Convert the number 27 to HEX:
1A
18
1C
1B
21
Which operating system function manages the following? Printer, Memory, Hard Disk Drive, CPU
Resource Management
Network Management
Device Management
Process Management
22
"Uses light to read whether small pits exist on the surface of a disc."
Hard Drive
Magnetic
Optical
Solid State
23
What is an OPERAND?
A control signal send by the CPU.
An instruction to retreive specific data from memory
An Instruction
Data used for an instruction
24
What is a heat sink used for?
used to capture heat from all around the computer.
only built to capture heat built up from the motherboard.
used to help initially warm up the computer quickly
used to remove excess heat that is built up in the CPU.
25
What are the 3 main components of the CPU?
Address Bus, Control Bus, Data Bus
Control Unit, Arithmetic and Logic Unit, Registers
Control Unit, Arithmetic and Logic Unit, Address Bus
Control Unit, Registers, Address Bus
26
How many BITS are there in a byte?
8
1
2
4
27
What is the program counter used for?
holds the NEXT instruction that will be executed
holds the address of the NEXT instruction to be executed
holds the instruction that is currently being executed
holds the address of the instruction that is being executed
28
Put the following in order of size: megabyte, nibble, byte, bit, gigabyte
nibble, bit, byte, megabyte, gigabyte
gigabyte, megabyte, nibble, byte, bit
bit, nibble, byte, megabyte, gigabyte
bit, nibble, byte, gigabyte, megabyte
29
Is secondary storage VOLATILE or NON-VOLATILE? e.g. CD-ROM
Neither, it is only used to store a large amount of data.
NON-VOLATILE
it's unique in the fact that it retains properties of both
VOLATILE
30
What is an example of an OPERAND?
ADD
5
CMP R1, R2
MOV
31
"No moving parts; data is stored as an electrical charge."
Hard Drive
Magnetic
Optical
Solid State
32
What is the purpose of the ALU?
used as a small, temporary storage location.
stores the result of calculations carried out inside the CPU
sends out signals to other components inside the computer.
carries out Mathematical operations and calculations
33
What is the system bus?
connects only the CPU & RAM together for fast communication
used to exclusivly transport data around the computer system
used to transfer electricity between different components.
connects the major components of a computer system together.
34
What is VOLATILE memory?
considerably slower than NON-VOLATILE memory
data is lost when the device is no longer receiving power
retains all data even when power is lost.
uses magnetic charges to store its data.
35
Convert the HEX: 2AD to binary:
0110 1010 1001
0010 1010 1101
0110 1010 1101
0010 1110 1101
36
How many BYTES are there in a MEGABYTE?
1024*1024*1024
1024
1048
1024*1024
37
What is an example of an OPCODE?
MOV R1, #5
ADD
5
R1

GCSE Computing - How Computers Work 40 Questions Flashcards | StudBud