CPU2- The Fetch-Execute Cycle Flashcards
What is the fetch-execute cycle ?
Process in which a computer receives data and determines what to do with the data.
What components of CPU is involved in Fetch-Execute Cycle
CU
ALU
Memory
Briefly describe the flow of Fetch- Execute cycle/
Fetch—> Decode (FDES)
^ |
| v
Store<—Execute
Explain Fetch
CPU retrieves instructions and data from ahard drive and stores in registers
Explain decode
CPU determines which system components are required in execution of instruction and stored them in registers.
Explain Execute
CPU assigns relevant action to relevant system components to carry out instructions and process the data.
Explain Store
Processed data is stored in memory storage (Registers, SSD, HDD)
Which phases are know as instruction cycle?
Fetch and decode
Which phases are known as execution cycle?
Execution and store.