1.1.2 Types of processor Flashcards Preview

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Flashcards in 1.1.2 Types of processor Deck (17)
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What does CISC stand for?

Complex instruction set computers.


What does RISC stand for?

Reduced instruction set computers.


What is CISC?

Using a large instruction set, CISC sets out to accomplish tasks in a few lines of assembly language as possible.


What is RISC?

Using only simple instructions that take a single clock cycle to execute, RISC can use pipelining to increase speed.


Which has the smaller instruction set? RISC or CISC?

RISC has a smaller instruction set.


Why might a RISC processor require less power as opposed to a CISC processor?

RISC has less complex circuitry and thus uses fewer transistors which means it requires less power.


What is one advantage of a RISC processor?

Since instructions all take a single clock cycle to complete pipelining can be implemented to increase speed.


What is one advantage of a CISC processor?

Since the code is relatively short, only a small amount of ram is required to store the instructions.


Define a coprocessor.

An extra processor used to supplement the functions of the primary processor.


Define the GPU.

A specialised electronic circuit which is very efficient in manipulating computer graphics and image processing.


What is one use for a GPU?

To render models.


What is the architecture of a GPU like?

a GPU has a massively parallel architecture consisting of thousands of smaller efficient cores designed to handle multiple tasks at once.


What is a GPU well suited to?

Processing large blocks of visual data simultaneously.


What are some non-graphics related uses for a GPU?

Machine learning, oil exploration and financial transactions.


How might multiple cores improve performance?

Each core acts as a separate processing unit so distributing a workload over multiple cores achieve significantly higher performance as opposed to a single core.


Why might two cores not be twice as fast as one core?

Because improvements in performance gained by using a multi-core system are dependant on the software being able to take advantage of parallel processing capabilities.


What is parallel processing?

A mode of operation where a process is split into parts which are executed simultaneously on different cores within a CPU.