what is Types of Processors

February 21, 2019

Types of Processors

Two designs of CPU are as follows:

CISC

CISC stands for complex instruction set computing. It supports a large number of

instructions. It executes complex instruction more quickly. It is mostly used in PC and

conventional mainframe computers. Intel's Pentium and Titanium are CISC chips. AMD is

another manufacture of CISC chips.

RISC

RISC stands for reduced instruction set computing. It reduces the instructions to only

those which are used more frequently. It executes simple instructions more quickly. than

CISC CPU. It is mostly used in workstations. The workstations can work up to 10 times faster

than most PCs due to RISC. It is used in many Macintosh computers. RISC chips are also

cheaper to produce because they require fewer transistors.

Pipe lining

In some computers, processor fetches, decodes, executes and stores only one

instruction at a time. The CPU waits until an instruction completes its all four stages and then

executes the next Many today's computers can process multiple instructions at

one time by using the technique of pipe lining.

Pipe lining is a technique in which CPU fetches the next instruction before it completes

the machine cycle for the first instruction. It results in faster processing.