The mouse is a hand-held pointing device that detects two-dimensional motion relative to a surface and translates that motion into movement of a pointer on the display. It was invented in 1946 as part of a radar system and allows smooth control of a computer's graphical user interface. A mouse controls pointer motion in two dimensions and turns hand movements forward, back, left, and right into signals that move the pointer. Common gestures include single clicking the main button, double clicking for a different action, and right clicking to open context menus.

1. What ismouse
The trackball, a related pointing device, was invented in 1946 by Ralph Benjamin as part of a post-
World War II-era fire-control radar plotting system called the Comprehensive Display System (CDS).
Mouse used to your computer and laptop screen arrowkey is not show so with the help of mouse .
A computer mouse (plural mice, sometimes mouses)[nb 1]
is a hand-held pointing device that
detects two-dimensional motion relative to a surface. This motion is typically translated into the
motion of a pointer on a display, which allows a smooth control of the graphical user interface of
a computer.
A mouse typically controls the motion of a pointer in two dimensions in a graphical user interface
(GUI). The mouse turns movements of the hand backward and forward, left and right into equivalent
electronic signals that in turn are used to move the pointer.
 Click: pressing and releasing a button.
o (left) Single-click: clicking the main button.
o (left) Double-click: clicking the button two times in quick succession counts as a different
gesture than two separate single clicks.
 than t(left) Triple-click: clicking the button three times in quick succession counts as a
different gesture hree separate single clicks. Triple clicks are far less common in traditional
navigation.
o Right-click: clicking the secondary button. In modern applications, this frequently opens
context menu .
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