The world's weirdest mice

A mouse is such a simple device that not even the worst inventor could screw it up, right? Wrong! We'll give you 13 examples.

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A Calculator in Every Mouse by 2020

The [[xref: |LS-100TKM from Canon|Canon Inc., the industry's first electronic calculator / numeric keypad with a mouse]] flips open like a 1990s cell phone to reveal a secret integrated calculating device (aka a "calculator") and numeric keypad. Don’t have any actual math questions at the moment? Type in "1134" and hold it upside down. You’re a badass!

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