unit of computer

UNITS OF COMPUTER:-

INPUT UNIT:- By this unit can give the information instruction to the computer.

System unit:-  it s also called C.P.U. it is also called brain of the computer. It is devided into three categories.

A.L.U.:- Full form of  ALU is Arithmetical Logical Unit. It work to calculation in the computer that is for calculate or calculate the data path to which path they move in distance.

M.U.:- full form of MU is Memory Unit it work to store data in the computer.

C.U.:- full form of CU is control unit it work to control the all task doing by the computer.

BLOCK DIAGRAM OF COMPUTER

following five basic operations for converting raw input data into information useful to users.

1.Inputing : The process of entering data and instructions into computer system is called Inputing.

2. Storing:- Saving data and instructions so that they are available for future use whenever required.

3. Procesing:- Performing arithmetic operations (Add, Subtract, Multiply, Divide etc.) or logical operations (Comparisons like equal to, less than, greater than etc.) on data in order to convert them into useful information.

4. Outputing:- The process of obtaining useful information or results to user such as printed report or visual display.

5. Controling:- Detecting the manner and sequence in which all above operations are performed.

          Any computer system have essentially four important parts normally input unit, central                          processing unit, storage unit and output unit. The block diagram is shown in Figure.

 

Block diagram of Computer   In the Figure, the solid lines are used to indicate the flow of instruction and data and the  dotted lines represent the control exercised by the control unit.