CPU2- The Fetch-Execute Cycle

Question 1

What is the fetch-execute cycle ?

Answer 1

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

Question 2

What components of CPU is involved in Fetch-Execute Cycle

Answer 2

CU
ALU
Memory

Question 3

Briefly describe the flow of Fetch- Execute cycle/

Answer 3

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

Question 4

Explain Fetch

Answer 4

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

Question 5

Explain decode

Answer 5

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

Question 6

Explain Execute

Answer 6

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

Question 7

Explain Store

Answer 7

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

Question 8

Which phases are know as instruction cycle?

Answer 8

Fetch and decode

Question 9

Which phases are known as execution cycle?

Answer 9

Execution and store.