What does the MDR do?

holds the data read from or written to memory temporarily

In the fourth stage of the FDE cycle, what can the operand hold?

Address of the data to be used with operation copied to MAR, Actual data to be operated on, copied to MDR, Data to be operated on may be passed to the ALU/Accumulator

What does the Bus Request command do?

Indicates that a device is requesting the use of data bus

Which of the following is part of the fourth stage of the FDE cycle?

The instruction held in the CIR is decoded

Which of the following is the final stage of the FDE cycle?

appropriate instruction/opcode is carried out on the operand

Which of the following is part of the fourth stage of the FDE cycle?

The instruction is split into opcode and operand

What does it mean when each bus is a shared transmission medium?

Only one device can transmit along a bus at any one time

What do control lines ensure?

Access to & use of the data &address buses do not conflict

Which of the below is a function of the CU?

To control the FDE cycle between CPU components

Which of the following is part of the fourth stage of the FDE cycle?

opcode used 2 determine type of instruction & hardware 2 use

What is the Fetch-Decode-Execute Cycle?

sequence of operations involved in executing an instruction

What does the ALU do?

Performs arithmetic and logic operations on the data

Which is the 3rd step of the FDE cycle?

The contents of the MDR are copied to the CIR

What does the term bi-directional bus mean?

Signals can be carried in both directions

Why are words used as operands in program instructions?

the data can be retrieved and sent back to the processor

What does the Data bus do?

a bi-directional path for moving data between CPU components

Which is the first step of the Fetch-Decode-Execute cycle?

Address of the next instruction is copied from PC to the MAR

What does the CIR do?

holds the current instruction being executed

What does the command Memory Write do?

causes data on the data bus to be written into the location

What is an I/O controller?

the connection and control of input and output devices

What does the Program Counter do?

Holds the number of instructions that have been executed, Holds the address of the next instruction to be executed

What does the CPU do?

Executes instructions through the FDE cycle

There are 2 answers which make up the second step of the FDE cycle. Which is one of them?

The instruction held at that address is copied to the MDR, content of PC is incremented so it can hold next instruction

Which 3 functions are the main purpose of the control bus?

Transmit command, timing and specific status information

Special memory cells that operate at very high speed

What is a bus in computing terms?

A set of parallel wires connecting two or more components

What happens when an instruction has been executed?

the result is stored at a particular memory location

What is the purpose of the Control Unit?

To control and coordinate the activities of the CPU

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Processor Components

60 termsStudBud Administration230 plays

A Computer Science quiz for the Processor Components Section

Flashcards60 cardsFPractice quizPHost liveL

Questions 60

Answers

1
What does the MDR do?
holds the data read from or written to memory temporarily
holds the address of data which is to be fetched
holds the calculations made by the ALU
holds the current instruction being executed
2
What are words used as in program instructions?
Operands
Words
Inputs
Outputs
3
How many buses connect the processor to the main memory?
2
1
4
3
4
What does the acronym CPU stand for?
Central Processing Unit
Control Processing Unit
Current Program Unit
Computer Processing Unit
5
Where is the data sent along when the CPU requests access to data in the main memory?
Memory Bus
Address Bus
Data Bus
Control Bus
6
How many parallel lines does a bus usually consist of?
3, 5, 7, 9
3, 9, 54, 79
1208, 2412, 4824, 9648
8, 16, 32, 64
7
What are the control, address and data buses collectively known as?
Processor bus
Memory bus
System bus
Computer bus
8
In the fourth stage of the FDE cycle, what can the operand hold?
appropriate instruction/opcode is carried out on the operand
Address of the data to be used with operation copied to MAR
Actual data to be operated on, copied to MDR
Data to be operated on may be passed to the ALU/Accumulator
9
What does the Bus Request command do?
causes data from the location to be placed on the data bus
causes data on the data bus to be written into the location
Indicates that a device is requesting the use of data bus
indicates that the CPU has granted access to the data bus
10
What does the acronym ALU stand for?
Addition-Locus Unit
Arithmetic-Logic Unit
Arithmetic-Logarithmic Unit
Addition-Logic Unit
11
Which of the following is part of the fourth stage of the FDE cycle?
The instruction held in the address is copied to the MDR
appropriate instruction/opcode is carried out on the operand
The contents of the MDR are copied to the CIR
The instruction held in the CIR is decoded
12
Each word in memory has its own...
specific command
specific address
specific function
specific identity
13
Which of the following is the final stage of the FDE cycle?
Contents of the MDR copied to the CIR
PC is incremented
Address of next instruction copied from PC to MAR
appropriate instruction/opcode is carried out on the operand
14
Which of the following is part of the fourth stage of the FDE cycle?
The instruction is split into opcode and operand
execution
fetching
appropriate instruction/opcode is carried out on the operand
15
What does it mean when each bus is a shared transmission medium?
Only one device can transmit along a bus at any one time
Devices can transmit multiple times through buses
Buses can access information automatically from the web
Buses can simultaneously communicate with the processor
16
What do control lines ensure?
Access to & use of the data &address buses do not conflict
That data and address lines do conflict
17
Which of the below is a function of the CU?
To store cache data
To control the FDE cycle between CPU components
To create a virtual machine
To bootstrap the OS
18
Where is the address of memory sent when the CPU requests to access it?
Address Bus
Control Bus
Data Bus
Memory Bus
19
Which of the following is part of the fourth stage of the FDE cycle?
opcode used 2 determine type of instruction & hardware 2 use
address is copied to MAR
appropriate instruction/opcode is carried out on the operand
PC is incremented
20
What sizes are words typically?
16, 23 or 64 tb
Any size
16, 32 or 64 bits
16, 32 or 64kg
21
How many phases are in the FDE cycle?
6
7
4
3
22
Which bus carries control signals?
Address Bus
Memory Bus
Control Bus
Data Bus
23
What is the Fetch-Decode-Execute Cycle?
controls the CPU
commands system buses on their operations
sequence of operations involved in executing an instruction
the cycle of recycling
24
What does the ALU do?
Used to temporarily store the data read written to memory
Holds the address of the next instruction to be executed
Performs arithmetic and logic operations on the data
Hold the current instruction being executed
25
Which two buses can travel in both directions between the processor,memory and I/O controllers?
None of the buses can
Address Bus and Data Bus
Address Bus and Control Bus
Control Bus and Data Bus
26
Which is the 3rd step of the FDE cycle?
the actual data to be operated on
appropriate instruction/opcode is carried out on the operand
the data to be operated may be passed to the ALU/ACC
The contents of the MDR are copied to the CIR
27
What does the term bi-directional bus mean?
Signals can be carried in one direction
Signals can be carried in both directions
28
Why are words used as operands in program instructions?
the data can be retrieved and sent back to the processor
to synchronise operations
to request access to the CPU
so that words can be given a specific address
29
What does the Data bus do?
a one directional path for moving data between components
a bi-directional path for moving data between CPU components
30
Which is the first step of the Fetch-Decode-Execute cycle?
Contents of MDR are copied to the CIR
Instruction held at the address is copied to the MDR
PC incremented so that it holds address of next instruction
Address of the next instruction is copied from PC to the MAR
31
What does the CIR do?
holds the address of the memory location
commands the CPU
holds calculations made by the ALU
holds the current instruction being executed
32
How many registers are usually in a CPU?
5
15
4
16
33
What is memory divided up internally into?
Letters
Words
Floats
Numbers
34
What does the command Memory Write do?
indicates that a device is requesting access to the CPU
used to synchronise operations
indicates that the CPU has granted access to the data bus
causes data on the data bus to be written into the location
35
Where are all calculations made by the ALU stored?
MAR
Accumulator
CIR
MDR
36
What is a word in computing terms?
A phonetic sound which is spoken and written
A fixed size group of digits
37
Which bus can only communicate signals one way?
Memory Bus
Address Bus
Data Bus
Control Bus
38
What does the acronym MAR stand for?
Mathematical Accumulation Register
Memory Address Register
Mathematical Address Register
Memory Addition Register
39
What is an I/O controller?
Stores the address of data which is to be fetched
Stores calculations made by the ALU
the connection and control of input and output devices
Stores recently accessed data
40
What does the Program Counter do?
used to temporarily store data read from memory
Holds the number of instructions that have been executed
Holds the calculations made by the ALU
Holds the address of the next instruction to be executed
41
What does the CPU do?
Executes instructions through the FDE cycle
Allows you to access the internet
Reads disks
The power source for the computer
42
What does the acronym MDR stand for?
Memory Data Rapid
Memory Development Register
Mathematical Data Register
Memory Data Register
43
There are 2 answers which make up the second step of the FDE cycle. Which is one of them?
The data to be operated on may be passed to the ALU
The instruction held at that address is copied to the MDR
Address of next instruction is copied from PC to MAR
content of PC is incremented so it can hold next instruction
44
Which 3 functions are the main purpose of the control bus?
Timing, specific status information and storing data
Transmit command, timing and specific status information
Timing, storage and command
Transmit command, store the address and data
45
What is a register?
Used to log who's present at school
Special memory cells that operate at very high speed
Used to calculate the amount of cash is to be exchanged
Controls the CPU
46
Which two buses are shared by all components of the system?
Control and Memory
Address and Data
Address and Control
Control and Data
47
What does the accumulator take the place of?
Control Unit
ALU
CPU
general purpose registers
48
What does the acronym PC stand for?
Processing Computer
Program Counter
Personal Computer
Program Controller
49
What is a bus in computing terms?
A set of parallel wires connecting two or more components
Transportation of information to a router
A mode of public transport
A way of communicating with other computers
50
What happens when an instruction has been executed?
the instruction will request access to the CPU
the instruction will be fetched
the result is stored at a particular memory location
the instruction will be decoded
51
What is the purpose of the Control Unit?
To control operations handled through the operating system.
to store calculations made by the ALU
store the address of an instruction which is to be executed
To control and coordinate the activities of the CPU
52
Which operations are performed by the ALU?
Modulus and Quotient
ADD, SUBTRACT, MULTIPLY, DIVIDE on fixed & floating point No
Shift operations
Boolean Logic
53
What does the Address bus do?
Transmits the memory addresses to the processor
Provides a bi-directional path for data
Commands components within the CPU
Stores the number of programs executed by the CPU
54
What does the MAR do?
holds the amount of programs executed
holds the address of the data which is to be fetched
holds the data read from or written to memory
Holds calculations made by the ALU
55
What does the command Bus Grant do?
indicates that the CPU has granted access to the address bus
indicates that the CPU has granted access to the data bus
used to synchronise operations
Indicates that a device is requesting access to the CPU
56
What does the command Memory Read do?
causes data on the data bus to be written into the location
indicates that a device is requesting access to the CPU
causes data from the location to be placed on the data bus
used to synchronise operations
57
What does the acronym CIR stand for?
Control Instruction Register
Current Information Register
Current Instruction Register
Control Information Rapid
58
What components are within the CPU?
CU, buses, ALU and dedicated registers
RAM, ROM, CU, Buses
CU, buses, ALU and RAM
GPU, CU, buses, dedicated registers
59
What does the control line command clock do?
used to synchronise operations
indicates that a device is requesting access to the CPU
60
What does the command Interrupt request do
indicates that a device is requesting the use of the databus
causes data from the location to be placed on the data bus
indicates that a device is requesting access to the CPU
used to synchronise operations

Processor Components Flashcards | StudBud

Processor Components

60 termsStudBud Administration230 plays

A Computer Science quiz for the Processor Components Section

Flashcards60 cardsFPractice quizPHost liveL

Questions 60

Answers

1
What does the MDR do?
holds the data read from or written to memory temporarily
holds the address of data which is to be fetched
holds the calculations made by the ALU
holds the current instruction being executed
2
What are words used as in program instructions?
Operands
Words
Inputs
Outputs
3
How many buses connect the processor to the main memory?
2
1
4
3
4
What does the acronym CPU stand for?
Central Processing Unit
Control Processing Unit
Current Program Unit
Computer Processing Unit
5
Where is the data sent along when the CPU requests access to data in the main memory?
Memory Bus
Address Bus
Data Bus
Control Bus
6
How many parallel lines does a bus usually consist of?
3, 5, 7, 9
3, 9, 54, 79
1208, 2412, 4824, 9648
8, 16, 32, 64
7
What are the control, address and data buses collectively known as?
Processor bus
Memory bus
System bus
Computer bus
8
In the fourth stage of the FDE cycle, what can the operand hold?
appropriate instruction/opcode is carried out on the operand
Address of the data to be used with operation copied to MAR
Actual data to be operated on, copied to MDR
Data to be operated on may be passed to the ALU/Accumulator
9
What does the Bus Request command do?
causes data from the location to be placed on the data bus
causes data on the data bus to be written into the location
Indicates that a device is requesting the use of data bus
indicates that the CPU has granted access to the data bus
10
What does the acronym ALU stand for?
Addition-Locus Unit
Arithmetic-Logic Unit
Arithmetic-Logarithmic Unit
Addition-Logic Unit
11
Which of the following is part of the fourth stage of the FDE cycle?
The instruction held in the address is copied to the MDR
appropriate instruction/opcode is carried out on the operand
The contents of the MDR are copied to the CIR
The instruction held in the CIR is decoded
12
Each word in memory has its own...
specific command
specific address
specific function
specific identity
13
Which of the following is the final stage of the FDE cycle?
Contents of the MDR copied to the CIR
PC is incremented
Address of next instruction copied from PC to MAR
appropriate instruction/opcode is carried out on the operand
14
Which of the following is part of the fourth stage of the FDE cycle?
The instruction is split into opcode and operand
execution
fetching
appropriate instruction/opcode is carried out on the operand
15
What does it mean when each bus is a shared transmission medium?
Only one device can transmit along a bus at any one time
Devices can transmit multiple times through buses
Buses can access information automatically from the web
Buses can simultaneously communicate with the processor
16
What do control lines ensure?
Access to & use of the data &address buses do not conflict
That data and address lines do conflict
17
Which of the below is a function of the CU?
To store cache data
To control the FDE cycle between CPU components
To create a virtual machine
To bootstrap the OS
18
Where is the address of memory sent when the CPU requests to access it?
Address Bus
Control Bus
Data Bus
Memory Bus
19
Which of the following is part of the fourth stage of the FDE cycle?
opcode used 2 determine type of instruction & hardware 2 use
address is copied to MAR
appropriate instruction/opcode is carried out on the operand
PC is incremented
20
What sizes are words typically?
16, 23 or 64 tb
Any size
16, 32 or 64 bits
16, 32 or 64kg
21
How many phases are in the FDE cycle?
6
7
4
3
22
Which bus carries control signals?
Address Bus
Memory Bus
Control Bus
Data Bus
23
What is the Fetch-Decode-Execute Cycle?
controls the CPU
commands system buses on their operations
sequence of operations involved in executing an instruction
the cycle of recycling
24
What does the ALU do?
Used to temporarily store the data read written to memory
Holds the address of the next instruction to be executed
Performs arithmetic and logic operations on the data
Hold the current instruction being executed
25
Which two buses can travel in both directions between the processor,memory and I/O controllers?
None of the buses can
Address Bus and Data Bus
Address Bus and Control Bus
Control Bus and Data Bus
26
Which is the 3rd step of the FDE cycle?
the actual data to be operated on
appropriate instruction/opcode is carried out on the operand
the data to be operated may be passed to the ALU/ACC
The contents of the MDR are copied to the CIR
27
What does the term bi-directional bus mean?
Signals can be carried in one direction
Signals can be carried in both directions
28
Why are words used as operands in program instructions?
the data can be retrieved and sent back to the processor
to synchronise operations
to request access to the CPU
so that words can be given a specific address
29
What does the Data bus do?
a one directional path for moving data between components
a bi-directional path for moving data between CPU components
30
Which is the first step of the Fetch-Decode-Execute cycle?
Contents of MDR are copied to the CIR
Instruction held at the address is copied to the MDR
PC incremented so that it holds address of next instruction
Address of the next instruction is copied from PC to the MAR
31
What does the CIR do?
holds the address of the memory location
commands the CPU
holds calculations made by the ALU
holds the current instruction being executed
32
How many registers are usually in a CPU?
5
15
4
16
33
What is memory divided up internally into?
Letters
Words
Floats
Numbers
34
What does the command Memory Write do?
indicates that a device is requesting access to the CPU
used to synchronise operations
indicates that the CPU has granted access to the data bus
causes data on the data bus to be written into the location
35
Where are all calculations made by the ALU stored?
MAR
Accumulator
CIR
MDR
36
What is a word in computing terms?
A phonetic sound which is spoken and written
A fixed size group of digits
37
Which bus can only communicate signals one way?
Memory Bus
Address Bus
Data Bus
Control Bus
38
What does the acronym MAR stand for?
Mathematical Accumulation Register
Memory Address Register
Mathematical Address Register
Memory Addition Register
39
What is an I/O controller?
Stores the address of data which is to be fetched
Stores calculations made by the ALU
the connection and control of input and output devices
Stores recently accessed data
40
What does the Program Counter do?
used to temporarily store data read from memory
Holds the number of instructions that have been executed
Holds the calculations made by the ALU
Holds the address of the next instruction to be executed
41
What does the CPU do?
Executes instructions through the FDE cycle
Allows you to access the internet
Reads disks
The power source for the computer
42
What does the acronym MDR stand for?
Memory Data Rapid
Memory Development Register
Mathematical Data Register
Memory Data Register
43
There are 2 answers which make up the second step of the FDE cycle. Which is one of them?
The data to be operated on may be passed to the ALU
The instruction held at that address is copied to the MDR
Address of next instruction is copied from PC to MAR
content of PC is incremented so it can hold next instruction
44
Which 3 functions are the main purpose of the control bus?
Timing, specific status information and storing data
Transmit command, timing and specific status information
Timing, storage and command
Transmit command, store the address and data
45
What is a register?
Used to log who's present at school
Special memory cells that operate at very high speed
Used to calculate the amount of cash is to be exchanged
Controls the CPU
46
Which two buses are shared by all components of the system?
Control and Memory
Address and Data
Address and Control
Control and Data
47
What does the accumulator take the place of?
Control Unit
ALU
CPU
general purpose registers
48
What does the acronym PC stand for?
Processing Computer
Program Counter
Personal Computer
Program Controller
49
What is a bus in computing terms?
A set of parallel wires connecting two or more components
Transportation of information to a router
A mode of public transport
A way of communicating with other computers
50
What happens when an instruction has been executed?
the instruction will request access to the CPU
the instruction will be fetched
the result is stored at a particular memory location
the instruction will be decoded
51
What is the purpose of the Control Unit?
To control operations handled through the operating system.
to store calculations made by the ALU
store the address of an instruction which is to be executed
To control and coordinate the activities of the CPU
52
Which operations are performed by the ALU?
Modulus and Quotient
ADD, SUBTRACT, MULTIPLY, DIVIDE on fixed & floating point No
Shift operations
Boolean Logic
53
What does the Address bus do?
Transmits the memory addresses to the processor
Provides a bi-directional path for data
Commands components within the CPU
Stores the number of programs executed by the CPU
54
What does the MAR do?
holds the amount of programs executed
holds the address of the data which is to be fetched
holds the data read from or written to memory
Holds calculations made by the ALU
55
What does the command Bus Grant do?
indicates that the CPU has granted access to the address bus
indicates that the CPU has granted access to the data bus
used to synchronise operations
Indicates that a device is requesting access to the CPU
56
What does the command Memory Read do?
causes data on the data bus to be written into the location
indicates that a device is requesting access to the CPU
causes data from the location to be placed on the data bus
used to synchronise operations
57
What does the acronym CIR stand for?
Control Instruction Register
Current Information Register
Current Instruction Register
Control Information Rapid
58
What components are within the CPU?
CU, buses, ALU and dedicated registers
RAM, ROM, CU, Buses
CU, buses, ALU and RAM
GPU, CU, buses, dedicated registers
59
What does the control line command clock do?
used to synchronise operations
indicates that a device is requesting access to the CPU
60
What does the command Interrupt request do
indicates that a device is requesting the use of the databus
causes data from the location to be placed on the data bus
indicates that a device is requesting access to the CPU
used to synchronise operations