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1.1.2 Types of processor

A-Level Computer Science

Fill in the blanks with the correct words. Click "Check Answer" to see if you're right!

Term: CISC

Definition:

Instruction Set Computer. A processor design with a instruction set. More complex circuitry needed so more expensive to produce and uses more power. Usually physically larger. Easier to write assembly code as more instructions to choose from.
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Term: RISC

Definition:

Instruction Set Computer. A processor design with a instruction set. It is simple, cheaper, lower powered processor. Harder to write assembly code as there are fewer instructions.
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Term: GPU

Definition:

Graphics Processing Unit. A specialised processor that performs with Single Instruction Data (SIMD) type processing such as graphics rendering, machine learning, simulations.
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Term: Multicore processor

Definition:

A processor with more than one processing in a single processor. Which can process instructions at the same time.
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Term: Parallel processing

Definition:

The use of several co-processors or cores to process a task
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Term: SIMD

Definition:

Single Instruction Multiple . A type of parallel processing where one instruction is carried out on multiple pieces of data. E.g rendering graphics often requires only one instruction to change a pixel colour but is applied to many pixels. GPUs specialise in this type of processing.
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