First PC mouses

Douglas Engelbart of the Stanford Research Institute invented the mouse in 1963[2][3] after extensive usability testing. Several other experimental pointing-devices developed for Engelbart's oN-Line System (NLS) exploited different body movements — for example, head-mounted devices attached to the chin or nose — but ultimately the mouse won out because of its simplicity and convenience. The first mouse, a bulky device (pictured) used two gear-wheels perpendicular to each other: the rotation of each wheel translated into motion along one axis.

Technologies
•1.1 Early mice
•1.2 Mechanical mice
•1.3 Optical mice
•1.3.1 Laser mice
•1.3.2 Optical versus mechanical mice
•1.4 Inertial mice
•1.5 3D mice
•1.6 Double mouse
•1.7 Connectivity and communication protocols
•1.7.1 Serial interface and protocol
•1.7.2 PS/2 interface and protocol
•1.7.2.1 Extensions: IntelliMouse and others
•1.7.3 Apple Desktop Bus
•1.8 Tactile mice
•2 Buttons
•2.1 Additional buttons
•2.2 Wheels
•2.3 Button techniques
•2.4 Common button operations
•3 Mouse speed
•4 Etymology
•5 Accessories
•5.1 Mousepad
•5.2 Foot covers
•6 Mice in the marketplace
•7 Alternative pointing devices
•8 Applications of mice in user-interfaces
•8.1 One, two or three buttons?
•9 Mice in gaming
•9.1 First-person shooters
•9.1.1 Invert mouse setting
•9.1.2 Home consoles
•10 See also
•11 Notes
•12 References
•13 External links