A computer mouse is a hand-held pointing device that detects two-dimensional motion relative to a surface and translates that motion into cursor movement on a display. Originally using a rolling ball to detect motion, modern mice often use optical sensors without moving parts. In addition to moving the cursor, mice have buttons to allow operations like selecting menu items and may also feature touch surfaces or scroll wheels for additional control.

1. WHATIS MOUSE>>>
A computermouseisa hand-heldpointingdevice thatdetects two-
dimensionalmotion relativeto a surface.Thismotion istypically
translatedinto the motion of a pointer on a display,whichallowsa
smooth control of the graphicaluser interface.Thefirst public
demonstrationof a mousecontrolling a computersystem was in1968.
Originallywiredto a computer,manymodern micearecordless,relying
on short-rangeradio communicationwith theconnectedsystem.Mice
originallyuseda ballrolling on a surfaceto detectmotion, but modern
miceoften haveopticalsensors that haveno moving parts. Inaddition
to movinga cursor, computer micehaveone or more buttons to allow
operations such asselectionof a menu item on a display.Miceoften

2. also featureother elements,suchas touch surfacesand"wheels",which
enableadditionalcontrol anddimensionalinput.