What is Mouse ?

Computer Mouse is the most popular point and draw device. It has become a must have input device on personal computers and workstations which have a Graphical User Interface (GUI) based user interface. A mouse is a small handheld device, which can comfortably fit in a users palm. It goal on a small bearing and has one or more buttons on the top. When a user rolls the mouse across the flat surface, the graphic cursor moves on the screen of the video display terminal in the direction of the mouse movements depending on the Application.

The text and graphics cursor may be displayed on the screen at the same time. With a proper software a mouse can also be used to draw pictures on the screen and edit text.

Also Read :-

• Introduction to Computers
• what is keyboard ? working of Keyboard ?
• What is Pen drive ? What are the characteristics ?
• What is Memory ? Types of main memory & Classification of memory?

Definition of Mouse ?

Computer Mouse is an important input devices. The mouse is a palm-size device with a ball built into the bottom. The mouse may be mechanical or optical and comes in many shapes and sizes. When we move the mouse over a smooth surface. the balls rolls, and the pointer on the display screen moves in the same direction. It is used to move cursor, draw sketches or diagrams, selecting a text or object or menu item etc. with the mouse, we can draw, select options from a menu and modify or move text. we can give commands by pointing with the pointer and clicking a mouse button. In addition to minimizing typing errors, a mouse makes operating a microcomputer easier for beginning users.

Working of Mouse :

Principally, the mouse works by measuring how much it moves in a given direction. A mechanical mouse has a rubber ball at the bottom. when the user moves the mouse, the balls rolls along the surface of the mouse pad, and the mouse keeps track of how far the ball rolls. Inside the bottoms of the mouse are three rollers- one of them, the one mounted at 45^ angle to the other two is spring loaded. This roller is usually the smallest of the three. The other two rollers are usually larger and of different color. These rollers are mounted at a 90^ angle to one another, one roller measures how fast the ball is turning horizontally and the other measures how fast it is turning vertically. when the ball rolls, it turns these two rollers.

What is Mouse Rollers?

The Rollers are connected to a small sensor that measure how fast the axle is turning. Both sets of information are passed to the electronics inside the mouse. This Little processor, usually consisting of little more than a single chip, uses the information to determine how fast the mouse itself is movie and in what direction. This information is passed to the computer via a mouse cord, where the operating system then moves the pointer accordingly.

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