What is an advantage of an embedded system

It's simpler and cheaper to manufacture than a full computer

An electrical pathway for data inside a computer

What is the purpose of the Control Unit?

Controlling flow of data inside CPU and to other components

What is stored in the primary memory of a Von Neumann Architecure computer?

Program instructions and data to be processed

What is the main advantage of a Von Neumann Architecture computer?

It can run many different programs

What is being decoded in the Fetch Decode Execute Cycle?

The fetched instruction so it can be broken into CPU tasks

How powerful does a Von Neumann Architecture device need to be?

Powerful enough for common computing tasks

What was a major disadvantage of computers before the Von Neumann Architecture was invented?

They could not be reprogrammed to do different tasks.

How powerful does an embedded system need to be?

Just powerful enough to do the required task

What does the Program Counter do?

Tracks the correct order of instructions for CPU processing

What is the primary purpose of RAM?

To send data to and store results from the CPU at high speed

What does the Accumulator do?

Stores the result of last ALU operation

what happens in the execute part of the Fetch decode Execute Cycle?

The command is performed by the ALU to get a result

What is one disadvantage of an embedded system?

The system can't be reprogrammed

A Von Neumann Architecture computer is:

Does not have a specific set purpose

Small amount of ultra-fast memory on CPU to store vital data

What does the MAR store?

The position of an instruction held in RAM

What does the MDR store

The next instruction or data for the CPU to process

Why is CPU Cache needed to provide data for CPU processing?

RAM is not fast enough to prevent data delays in fast CPUs

What is a Core in a multi-core CPU?

An independent calculation unit that can split complex tasks

What does a register do?

Stores small amounts of data for immediate processing in CPU

What happens after CPU instruction has been Executed?

New data produced by operation is written back to RAM

What is the CPU clock speed?

How many cycles of processing a CPU performs per second

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CPU Architecture + Fetch Decode Execute Cycle

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GCSE Computer Science about CPU architecture, inner components and role in Fetch Decode Execute Cycle and Von Neumann Architecture

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Questions 30

Answers

1
What is an advantage of an embedded system
It's simpler and cheaper to manufacture than a full computer
It is more powerful than a full computer
It can run multiple programs
It does not have a CPU
2
What is a bus?
A crystal that controls the clock speed of a CPU
A store for a CPU instruction
A separate processing core in a CPU
An electrical pathway for data inside a computer
3
What is the purpose of the Control Unit?
Regulating power in the CPU
Storing data for faster access by CPU
Doing Maths and Logic calculations
Controlling flow of data inside CPU and to other components
4
What is stored in the primary memory of a Von Neumann Architecure computer?
Data to be processed
Non-volatile data
Program instructions and data to be processed
Program instructions
5
What does the ALU do?
Compares values to find smallest or largest
Does logical operations like AND OR and NOT
All of the above
Does mathematical calculations
6
Put in order of data access speed, fastest first:
RAM, Cache, Registers
Registers, RAM, Cache
Cache, Registers, RAM
Registers, Cache, RAM
7
What is the main advantage of a Von Neumann Architecture computer?
It can do one task very efficiently
It can run many different programs
Processed data is kept separate from program instructions
It is very cheap to manufacture
8
What is being decoded in the Fetch Decode Execute Cycle?
The fetched instruction so it can be broken into CPU tasks
Arithmetic or logic commands from ALU
The order of instructions from the program counter
Data from RAM
9
How powerful does a Von Neumann Architecture device need to be?
At least 1 GHz single core CPU
Just powerful enough to do the required task
Powerful enough for common computing tasks
More powerful than a locomotive
10
What was a major disadvantage of computers before the Von Neumann Architecture was invented?
They could not be reprogrammed to do different tasks.
They were powered by steam and unreliable
Computers didn't exist before the VNA was invented
They were too slow to be useful
11
How powerful does an embedded system need to be?
More powerful than a locomotive
At least 1 GHz
Powerful enough for most computing tasks
Just powerful enough to do the required task
12
What does the Program Counter do?
Tracks the correct order of instructions for CPU processing
Records the number of programs running on a computer
Counts the number of clock cycles per second
Performs mathematical operations
13
What is the primary purpose of RAM?
To hold data for long-term storage
To send data to and store results from the CPU at high speed
To do mathematical operations
To store non-volatile data
14
What does the Accumulator do?
Stores data in non-volatile ROM
Stops limescale build up in CPU
Stores the next command to be completed
Stores the result of last ALU operation
15
Which of these CPUs is the most powerful?
Octo Core 0.5 MHz
Single core 3.5 GHz
Dual Core 1.5 GHz
Quad core 800 MHz
16
What is being fetched and from what in the Fetch Decode Execute Cycle?
Data from accumulator
Data from secondary memory
Data and instructions from RAM
Data from program counter
17
what happens in the execute part of the Fetch decode Execute Cycle?
The command is assassinated
The cycle has finished so repeats again
The command is performed by the ALU to get a result
New data is copied back to RAM
18
What is one disadvantage of an embedded system?
The system can't be reprogrammed
They are very expensive to manufacture
They are not powerful enough to be useful
They require a lot of complex components
19
A Von Neumann Architecture computer is:
Does not have a specific set purpose
An embedded system
Incapable of being reprogrammed
A device designed to do a specific task
20
What is CPU Cache?
Small amount of ultra-fast memory on CPU to store vital data
Stores results of mathematical calculations
Holds the registers
Links CPU to external RAM
21
What does the MAR store?
Data loaded form RAM for faster access
The result of a logical operation
The data of an instruction copied from RAM
The position of an instruction held in RAM
22
What does the MDR store
The order of CPU instructions
Data copied from the CPU Cache
The next instruction or data for the CPU to process
The position of the next instruction in RAM
23
Why is CPU Cache needed to provide data for CPU processing?
To provide extra space for active data
RAM is not fast enough to prevent data delays in fast CPUs
It is cheaper than RAM
It is non-volatile
24
How many CPU operations does a 2.5 MHz computer perform a second?
2,500
2.5
2,500,000
2,500,000,000
25
What is a Core in a multi-core CPU?
An independent calculation unit that can split complex tasks
The ALU, registers and cache
The silicon wafer inside the chip
The central processing centre of the CPU
26
What does a register do?
Stores small amounts of data for immediate processing in CPU
Acts as a path for data inside the CPU
Decodes instructions in CPU
Holds important data for faster access than RAM
27
What happens after CPU instruction has been Executed?
New data produced by operation is written back to RAM
Data is copied to the hard disk
Cache is purged of data
The cycle restarts and repeats
28
What is the CPU clock speed?
How quickly a storage device can load data to RAM
A measure of how accurately the computer clock keeps time
How many cycles of processing a CPU performs per second
How quickly the RAM can provide data to the CPU
29
What is the fastest memory store in a computer?
Level 3 CPU Cache
Level 1 CPU Cache
CPU registers
RAM
30
How many CPU operations does a 3.3 GHz computer process per second?
330,000,000
3.3 million
Same as 3,300 MHz
33

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