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Question

The main difference between CISC and RISC processors, ______________.

A
has fewer instruction
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B
has fewer addressing modes
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C
has more register
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D
all of the above
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Solution

The correct option is D all of the above

The main difference between CISC and RISC processors:-

RISC(reduced instruction set computing) and CISC (complex instruction set computing) are two computer architectures that are predominantly used. The main difference between RISC and CISC is in the number of computing cycles each of their instructions take.

1) A reduced instruction set computer is a computer which only uses simple commands that can be divided into several instructions which achieve low-level operation within a single CLK cycle, as its name proposes “Reduced Instruction Set”. While a complex instruction set computer is a computer where single instructions can perform numerous low-level operations like a load from memory, an arithmetic operation, and a memory store or are accomplished by multi-step processes or addressing modes in single instructions, as its name proposes “Complex Instruction Set”.

2) The RISC processors have a smaller set of instructions with few addressing nodes while the CISC processors have a larger set of instructions with many addressing nodes.


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