Tag: cpu

Basic Computer Organization

Even thought the size,shape ,performance,relability,and cost computer have been changing over the last several years,the basic logical structure ,as proposed by Von Neumann has not changed,No matter what shape and size of computer we are talking about, all computer systems perform the following five functions :

1)Inputting: It is the process of entering data and instructions into a computer system.

2)Storing: It is the process of saving data and instructions to make them readily available for initial or additional processing as and when required.

3) Processing: Performing arithmetic operations (add, subtract ,multiply, divide ) or logical operations (less then, grater than, equal to) on data to convert them into useful information known as processing .

4) Outputting : It is the process of producing useful information or result for a user, such as printed report and visual display.

5) Controlling : Directing the manner and sequence in which the above operations are performed is known as controlling.

CENTRAL PROCESSING UNIT (CPU)

Control unit (CU) and arithmetic logic unit (ALU) of a computer system are together known as the central processing unit .It is the brain of a computer system . In human body, the brain takes all major decisions and all of the body function as direct by the brain. Similarly, in a computer system, the CPU performs all major calculation and comparosions , and also activates and controls the operations of other units of the computer system .