First mouse, from ~1968.
Inventor Douglas Engelbart holding the first computer mouse, showing the two wheels that contact the desk.
[image source 2016-05-09 https://en.wikipedia.org/wiki/File:Firstmouseunderside.jpg ]
SRI Computer Mouse
Optical Mouse, 1980s
This is popular in Sun Microsystem's workstation.
early optical mouse (1980s.)
This requires the shiny mirror-like pad underneath to work.
[image source 2016-05-09 https://commons.wikimedia.org/wiki/File:An_Early_Three_Buttoned_Mouse.jpg ]
Mouses from about 1985 to 1995
Mouses from about 1985 to 1995.
[photo by mr_a500, from
image source ]
