Keyboards have been with us since typewriters, and they seem simple enough, but there are lots of obscure bits of knowledge that can aid you or thwart you in using them effectively.
One question being frequently asked in the 21st Century by new Linux users is, "Can I use a PS2 or PC/AT-type keyboard with the display section of an old video-display terminal I was given for free?" Alas, except in a few cases with relatively new terminals, the answer is "No." Most vendors of "classical" character-cell video terminals used their own keyboard interfaces, which were proprietary both in electrical connection and in key encoding.
The mouse computer peripheral device was invented during the late 1960s by Douglas Engelbart at Stanford Research Institute. (Here are some of Dr. Engelbart's musings on why he settled on this type of pointing device instead of something else.) The Xerox Alto was the first deployment of the complete "windows, icons, and mice" technology later adopted by other computer vendors. BYTE magazine published this article about the Alto in 1981. (And we should also Remember the Star.)
As of Mac OS X 10.4 (Tiger), Apple has provided a built-in way to configure the "Caps Lock" key to behave as a "Control" key. See "Keyboard & Mouse" settings in System Preferences.
If you make a mistake with your mouse, it's a mouso!
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