Basic Computer
Computer Tutorial



A mouse is a small hand-held 'point and click' device that is connected to the CPU through a cable. Douglas Engelbart invented mouse in 1963 at Stanford Research Institute. Xerox Corporation's Palo Alto Research Center enhanced its capabilities by adding analogue to digital conversion. In the early 1970's. With the adoption of Graphical User Interface technology, mouse became an essential input device for computer later in the 1980's.
Mouse is an input device generally used with personal computer.It rolls on a small ball and has two or three buttons on the top. When you roll the mouse across a flat surface the screen censors the mouse in the direction of mouse movement. The cursor moves very fast with mouse giving you more freedom to work in any direction. It is easier and faster to move through a mouse.

There are three types of mouse

1. Mechanical Mouse
2. Optomechanical Mouse
3. Optical Mouse


Mechanical Mouse

Mechanical Mouse has a trackball at its bottom. It can be rolled across a flat and smooth surface to control the position of the cursor on the screen. By pointing and clicking on icons and menu options displayed on the screen, it is easy for the user to control the computer with a mouse. Mechanical sensors within the mouse detect the direction the ball is rolling and move the screen pointer accordingly.

Optomechanical Mouse

The Optomechanical mouse is more or less the same as the mechanical mouse, but it uses optical sensors to detect motion of the ball.

Optical Mouse

Optical mouse uses a laser to detect the mouse movement. The mouse requires to be moved along a special mat with a grid so that the optical mechanism has a frame of reference. It has no mechanical moving parts. It responds more quickly and precisely than mechanical or optomechanical mouse. Optical mouse is more expensive than the other two.