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Computer Mice
A type of pointing device plugged into a computer shares its name with a small rodent. Presumably the reason for this was the shape of the device in profile and the way its cable extended out of it like the tail of a mouse. This has been the source of many amusing characterisations including Mouse Price and esure where the figurative terminology becomes literal.
Inside a computer mouse there is generally either a ball and two rotation position sensors, or (in a laser mouse) a light and surface sensor.
Here are a few mouse resources at this site:
Free mouse given away when you buy stuff from Zyra's Bazaar
Mice are surely a fiendish invention as their operation relies on hand-eye interaction going on in the human. This is awkward for various reasons, in addition to the problem that mouse movements aren't properly computer-encodable!
Plus, if you've come here looking for mice as in small critters, see MICE