Let's know about Computer

                         INTRODUCTION TO COMPUTER 

COMPUTER :- A computer is an electronic device, operating under the control of instructions stored in its memory. 

FUNCTIONALITIES OF COMPUTER :- Computer performs five main functions; 
(i). Takes data as input.
(ii). It stores data for future use.
(iii). Process the data and convert it into useful information.
(iv). Generate the output.
(v). Control all above process.

COMPONENT OF COMPUTER :- (i). Hardware
                                                              (ii). Software



HARDWARE:- It contain all physical element of computer system. It consists of moniter, mouse, keyboard, computer data storage, etc all are physical component. 

INPUT DEVICE :- Input devices is any part of computer. These devices is any part computer. These devices transform data from that human understand to one that computer understand.
Example:-
1.  Keyboard                6. Keyboard                  (11). Playstations              (16). Pen input
2.  Touchscreen            7.  Graphics Tablet       (12). Digital Camera         (17). Microphone
3.  Joystick                    8.  Mouse                     (13). Remote control         (18). Trackball
4.   Headphone              9. Scanner                    (14). Microphone              (19). Gamepad
5.   E-whiteboard        10. Camera                     (15).  Webcam                (20).  Video Capture Hardware

Note :- Normal keyboards have 104 keys. 

OUTPUT DEVICE :-  These device convert electronically generated information into human readable form. 
Example:- (1). Moniter
                   (2). Printer
                   (3). Plotter
                   (4). Projector
                   (5). LCD Projection Panel
                   (6). Computer Output Microfilm (COM)
                   (7). Speaker 

SOME BASIC TYPE OF MONITER :- (a). CRT
                                                                     (b). LCD
                                                                     (c). LED

DATA- INFORMATION :- Data is the collection of facts, such as numbers, words, measurements, observations or just description of things. 
                                                Information means summarization of data, data are the raw facts that are processed into the information .



                

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