Mouse

Mouse or the other name is mice. An object as a pointing and drawing device. The mouse usually has a ball and buttons and is connected to the system unit through serial port. A mouse can have one, two or more buttons, which are used to select command option and to control the mouse pointer on the monitor. As a mouse is rolled across the flat desktop in any direction, it located the pointer correspondingly on the screen. Then it issues commands using the selection buttons on the mouse. The mouse pointer usually appear in the shape of an arrow. Some mice have a wheel button that can be rotated to scroll through information that is displayed on the monitor. Many portable microcomputer such as laptops use trackballs instead of mice.

There are three basic designs of a mouse :

OPTICAL MOUSE

-has no moving part and is currently the most widely used-

MECHANICAL MOUSE

-has a ball on the bottom and is attached with a cord to the

system unit-

CORDLESS OR WIRELESS MOUSE

-is a battery-powered device that typically uses radio waves or infrared light waves to communicate with the system unit-