Mouse is an input device. It is used to run the computer. Bascially it is a graphical user interface device.
All the GUI computers are operated by mouse. We can give instructions to computer from the mouse. It comes in variety like optical mouse, Ps2 mouse etc.
Keyboard is an input device. It is used to give data as an input to computer.
It gives character user data to computer. It is very important for computer.
Scanner is an input device. It is used to give image as an input to computer. It gives image data to computer.
We can scan every image, hard paper with scanner and make a digital copy like JPEG, Tiff etc. It is very important for computer.
Monitor is an output device. It displays the information on screen. All the digital data is shown on computer.
There are various types of monitor like Lcd Monitor, Led Monitor etc.
Printer is an output device. It prints hard copy on paper. If any one wants a hard copy of a digital information then printer is used.
We can print information on paper with various sizes like A3,A4 etc. A4 is very important size due to office use.
Plotter is an output device. It prints large hard copy on paper.
If any one wants a large hard copy print of a digital maps then plotter is used.
We can print information on paper with various large sizes like A1,A2 etc.