CPU

              CENTRAL PROCESSING UNIT(CPU)

The cpu is the portion of a computer system that carries out the instruction of the computer program,and  is the primary element carrying out the computer function.the central processing unit carries out each instruction of the program in sequence,to perform the basic arithmetical,logical and output/input operation of the system.this term has been in use in the computer industry at least since the early 1960s.The form design and implement CPUs has changed dramatically since the earliest examples,but their fundamental operation remains much the same.Early CPUs were custom designed as a part of a larger ,sometime one kind of computer.