Computer

computer-
                 computer is an electronic device that takes an input,process it and gives an output.It  has a ability to store, retrieve and  process data.

Main parts of computer-

Monitor-

                                    A computer monitor is an electronic device that shows pictures for computers.Computer  monitor is an output device and a piece of computer hardware.
                                   Monitors come in two major types-LCD and CRT,but others exists too,like OLED .CRT monitors look much like old-fashioned televisions and are very deep in size.LCD monitors are much thinner,use less energy and provide a greater graphics quality.

                                    

LCD monitor

CRT monitor

             

             


CPU-
                The full form of CPU is Central Processing Unit.CPU is the central component of the computer system.Sometimes it is called as microprocessor or processor.CPU is the heart and brain of the computer.It receives data input,executes instructions and processes information.

CPU

 Keyboard-
                                      A Computer keyboard is an input device that allows a person to enter letters,numbers and other symbols into a computer.it is one of the most used input devices for computers.A keyboard is connected to a computer system using a cable or a wireless connection.                                      

Keyboard

Mouse-
                          A computer mouse is an input device that is used with a computer.Moving a mouse along a flat surface can move the cursor to different items on the screen.Items can be moved or selected by pressing the mouse buttons called clicking.Today's mice have two buttons-the left button and the right button,with a scroll wheel in between the two.Today many computer mice use wireless technology and have no wire.

Mouse