Computer fundamental

                        Computer Fundamental
                               
                    Computer generation

(1)    First generation computer

             Duration 1942-1955

          

       

(2)Second generation computer:-

    Duration 1955-1964         

This is of second generation computer. This computer establish by Villiam be sokli. It is used to transistor in the second generation computer.

(3)Third generation computer:-

Duration:-1964-1975

             

                

This is of  Third generation computer    

       

(4) Fourth generation computer:-

           Duration:-1975-1985

 

         This is  of  fourth generation computer. It used to IC in the fourth generation computer.

(5)Fifth generation computer:-

Duration:-1985 to …..….

Components of computer:

  Control  Unit

  Output device

    Memory Unit

The different part of computer:-

Input

Output

Software

Hardware

Memory

  Input:-

               All Those part which are used to insert data in computer its call “input”.
Output:-

    All those part  which are  used to given as hard copy or soft copy for user.

        Input device:-

    Ex:-  Keyboard, Mouse,

                              

        Keyboard:-

 

Represent picture of  keyboard:-

                            

  Keyboard’s connected by two types of connector USB & Connector round serial. In computer keyboard is Type writer computer.

  1) P.S. public 2 
  2)U.S.B.(Universal serial bas)

Arrow key:-  Down arrow, Up arrow, Right key, Left key.

             
              

                           

                    Function key:- F1 to F12

                      
      
                     
                       

    Numeric keys:-0 to 9, delete.

                 

  Alphabetical  keys:- A to Z

 

          Monitor:-

             Monitor is a one type of output device that can be given  all those  data who has done by user.        

(1)  CRT- Cathode Red Tube.
                    
                               
        
  (2) LCD- Liquid crystal display
                   
                

   V.D.U.(Visual display unit)
   C.R.T.(Cathode red tube)
   L.C.D.(Liquid crystal display)
   D.V.D.(Digital versatile disk)
   C.D.(Compact disk)
   P.C.(Personal computer)
   A.L.U.(Arithmetic logic unit)
   C.U.(Control unit)

Mouse:-

         

              Mouse is a one type of type of input device that can be used to insert data in computer.   

         

1)      Optical mouse Scroll mouse

2)      USB mouse 

Scanner:-                 

             Scanner is a one type of input device. It used to scan photo, document in electronic format.

What is Central processing unit (C.P.U)

C.P.U is connected with computer and processing data and display  information computer screen .

C.P.U. devide in 3section:-
(1) Memory
(2)Control unit
(3) Arithmetic logic Unit

Output device:- All Those part of computer  is used to give piratical result it’s called “output device”. 
           
           

Printer:-

           

Printer is one type of output device. It used to print document, image etc.

            

Type of printer:-                       

Drum Printer 

Chain printer

Inject printer

Laser printer (Low speed)

Laser printer (High speed)

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