What is a Computer Mouse?
The mouse is a hand-held device with optical laser protruding from its base. As you push the mouse over the surface of the desk, the movements of the laser are detected by the internal mechanism and converted to electrical signals. These are fed to the computer via cable and converted by the associated software to corresponding movements of the cursor across the screen. At the front of the mouse’s casing are two or three buttons. You press these to perform tasks as picking options displayed on the screen.
Similar to the mouse is the trackball, used on some computers. In this, the casing remains stationary while the ball, which is at the top, rolled with the fingers.
The mouse has proved very popular and is now utilized by a great deal of software. In particular, it is much easier to use than the keyboard for the following operations.
- Picking, that is, selecting options from a list displayed on the screen.
- Pointing, that is, moving rapidly from one point to another in a word-processed document, file of records or table of data.
- Drawing, that is, creating lines and other shapes on the screen.
Mouse is an essential part of the hardware on almost the microcomputers running Windows software and other application software.
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