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J277 Unit 1 Revision Flashcards | StudBud
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J277 Unit 1 Revision
J277 Unit 1 Revision
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1
Which is not a characteristic of an 'embedded system'?
It has it's own microcontroller
It can perform many general tasks
It can perform one or a limited number of tasks very well
It is a smaller system inside of a larger system
2
Why is the cache faster than accessing instructions from main memory?
Because it can store more instructions than main memory
Because it is closer to the CPU than main memory
Because it is faster than main memory
Because it has a larger capacity than main memory
3
How does increasing the clock speed improve the performance of the CPU?
Has more memory so can store more instructions
Can process more instructions at the same time
Can store more frequently used instructions
Can process more instrcutions per second (more FDE cycles)
4
The role of the program counter is to store the address of the instruction
True
False
5
The role of the MAR is to store the address of the instruction that is being fetched from main memory
False
True
6
What is Von Neumann architecture?
Stores programs and data is separate memory
Stores programs and data in the same memory
Uses two CPUs to perform tasks faster
7
At which stage of the FDE cycle does the program counter increment by +1 ?
Execute
Fetch
Decode
8
What is the purpose of the ALU?
To store the result of the accumulator
To perform the FDE cyle
To control the flow of data
To perform arithmetic and logical operations
9
What is the definition of a 'register'?
A place to store data that the user inputs
Where the results of the ALU are stored
A very fast, but small memory location to store data and addresses
Decodes instructions so the computer can process them
10
What is the purpose of the Control Unit?
Performs the instruction
Performs mathematical caluclations
Is a conductor of an orchestra
Manages the flow of data and decodes instructions
11
How does increasing the number of core improve the performance of the CPU?
Has more memory so can store more instructions
Can process more instrcutions per second (more FDE cycles)
Can store more frequently used instructions
Can process more instructions at the same time
12
The role of the accumulator is to process arithmetic and logic operations
False
True
13
What is the purpose of the CPU?
To process instructions
To perfom calculations
To store the results of an instruction
To transfer data from the hard drive
14
A microwave is an example of an embedded system
True
False
15
Which of the following is not a register of the CPU?
Arithmetic Logic Unit
Memory Data Register
Program Counter
Memory Address Register
16
What the the purpose of cache?
To store the results of the ALU
To store frequently used instructions
To perform the FDE cycle
To decode instrcutions
17
Cache is only found within the CPU.
False
True
18
The role of the MDR is to store the data of the instruction that has been fetched from main memory
True
False
