Hardware

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In relation to computer architecture, what are buses?
Communication systems that transfer data between components inside a computer.
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Describe the function of Program counter in the fetch-execute cycle.
This is a register in the CPU which contains the memory address of the next instruction to be processed.
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Describe the function of The address bus in the fetch-execute cycle.
The memory address of the instruction to be fetched is transmitted from the program counter to the RAM through the address bus.
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Describe the function of The data bus in the fetch-execute cycle.
The data is transmitted from RAM back to the instruction register in the CPU through the data bus.
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Describe the function of The decoder in the fetch-execute cycle.
The decoder in the control unit works out what the instruction means – what has to be done to the data.
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Describe the function of The Arithmetic and Logic unit in the fetch-execute cycle.
The control unit instructs the ALU to carry out or execute the instruction.
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What is a cache and why is it used?
A cache is a short-term storage area. It is used so that data can be accessed quicker, this will make the computer work faster.
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Explain what is meant by a disk cache.
A mechanism for improving the time it takes to read from or write to a hard dis drive.
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Explain what is meant by a memory cache.
A part of RAM memory that is set aside as a specialized cache or buffer that is continually updated.
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What is a web cache?
It is a folder full of web pages in the user’s computer that is maintained by the Web browser for a period of time.
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What is the difference between a multi processor system and a multi core system?
A multi processor system has several microprocessors each with a single CPU and a multi core system has a single microprocessor with several CPUs.
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What are the features of magnetic storage devices?
Cheap, A lot of space, but... Very slow to write and read from, and is not portable.
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What are the features of solid state storage devices?
Portable, Long lasting, Light/Small to hold but... Expensive, Vulnerable to abrupt power loss.
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What are the features of optical storage devices?
Portable, Fast, Cheap But... Have little storage, Can only be read in certain formats.
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Other cards in this set

Card 2

Front

Describe the function of Program counter in the fetch-execute cycle.

Back

This is a register in the CPU which contains the memory address of the next instruction to be processed.

Card 3

Front

Describe the function of The address bus in the fetch-execute cycle.

Back

Preview of the front of card 3

Card 4

Front

Describe the function of The data bus in the fetch-execute cycle.

Back

Preview of the front of card 4

Card 5

Front

Describe the function of The decoder in the fetch-execute cycle.

Back

Preview of the front of card 5
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