<hardware> A keypad that has become a standard feature of PC keyboards, consisting of a rectangular array of 17 extra keys at the right-hand end: 0-9, ., Num Lock, /, *, -, + and Enter. Apart from Num Lock, these typically duplicate the function of other keys but are designed to make entering basic numerical calculations as quick as on a digital calculator. It is often possible to assign completely different functions to these keys according to the needs of a particular application.
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Nearby terms: number keys « numbers « number sign « numeric keypad » Numeris » Nuprl » NU-Prolog