#NUMBER KEYPAD PC#
The IBM Enhanced Keyboard moved this functionality to a dedicated clusters of editing and navigation keys, but retained the ability for the numeric keypad to be used for navigation, which has remained a standard behaviour of PC keyboards to this day.Ī keyboard without a numeric keypad is known as a tenkeyless ("TKL") or occasionally Space-Saver keyboard.
This functionality was introduced with the IBM Model F keyboard, which lacked any dedicated navigational keys. On keyboards meant for the IBM Personal Computer and compatibles, the numeric keypad has a second function that includes cursor keys and related navigational functions. The Sundstrand company's machine was distributed by the strong typewriter manufacturer Underwood, became popular and set the standard which was later picked up for general calculators and computer keyboards. The classic layout of 3×3 digits with the digits '7' '8' '9' on the top row and a larger '0' key at the bottom was introduced with the Sundstrand Adding Machine, invented by David Sundstrand in 1911.
"Numeric keypad" can also refer to a standalone numeric keypad used to complement a compact keyboard that lacks the number pad area. A numeric keypad or number pad, also numpad, ten-key pad or simply tenkey, is a section of a keyboard intended for entry of numbers and similar characters.
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