Electronics and Communication Engineering - Microprocessors - Discussion


IC (instruction cycle), FC (fetch cycle) and EC (executive cycle) are related as

[A]. IC = FC - EC
[B]. IC = FC + EC
[C]. IC = FC + 2EC
[D]. EC = IC + EC

Answer: Option B


Instruction cycle consists of fetch and execute cycles.

Govind Vairagi said: (Aug 1, 2014)  
Instruction cycle:- It is the time required to fetch,decode and execute the instruction. Maximum 5 m/c cycles are used in an instruction.

Instruction cycle=Fetch cycle + Execute cycle or IC=FC+EC.

Sri said: (May 7, 2015)  
What is fetch cycle and execute cycle in the process?

Sreenath said: (Nov 15, 2016)  
Fetch cycle - Fetching the requested address from the memory to the processor.

Execute cycle - this involves the execution of the fetched instruction by the processor.

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