from
The Free On-line Dictionary of Computing (8 July 2008)
numeric keypad
number keys
<hardware> 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.
(2007-01-31)