CPU2- The Fetch-Execute Cycle Flashcards

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1
Q

What is the fetch-execute cycle ?

A

Process in which a computer receives data and determines what to do with the data.

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2
Q

What components of CPU is involved in Fetch-Execute Cycle

A

CU
ALU
Memory

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3
Q

Briefly describe the flow of Fetch- Execute cycle/

A

Fetch—> Decode (FDES)
^ |
| v
Store<—Execute

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4
Q

Explain Fetch

A

CPU retrieves instructions and data from ahard drive and stores in registers

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5
Q

Explain decode

A

CPU determines which system components are required in execution of instruction and stored them in registers.

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6
Q

Explain Execute

A

CPU assigns relevant action to relevant system components to carry out instructions and process the data.

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7
Q

Explain Store

A

Processed data is stored in memory storage (Registers, SSD, HDD)

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8
Q

Which phases are know as instruction cycle?

A

Fetch and decode

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9
Q

Which phases are known as execution cycle?

A

Execution and store.

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