Machine Cycle

"Machine Cycle"

Processor that is also called Central Processing Unit (CPU), carries out the basic instructions that operate a computer.

To complete One instruction, a computer repeats four operations (FDES),

• Fetching
• Decoding
• Executing
• storing

Pipelining: Pipelining is a concept in PCs in which processor starts fetching the second instruction before first instruction is completed.

The processor that use pipelining are faster because they do not wait for one instruction to complete.

Without Pipelining: without pipelining the processor completes one instruction either fetches, decode, execute or store at a time.

In this processor waits until first instruction completes and then second instruction starts.

The result is thus a slower transferring.

Often it is sought that the computer, which does not use pipelining, hangs.

thus pipelining is most useful to complete our work on time.