Apple numeric keypad layout how to#
Apple numeric keypad layout Pc#

This new 101-key keyboard design soon became an industry standard among PC compatibles (and eventually made its way to the Mac in the form of the Apple Extended Keyboard). The numeric keypad on a 101-key IBM Model M keyboard. In 1984, IBM introduced its 101-key Extended Keyboard-now most commonly known as the “Model M”-and of course, the numeric keypad wasn’t left out. IBM also included mathematical operator keys and a Num Lock key, which switched functions between numeric keypad mode and using some of the keypad keys as cursor (arrow) keys. When IBM launched its own personal computer in 1981, it too included a numeric keypad on its keyboard with the tenkey layout.

In general, the more business-oriented the computer, the more likely it would include a numeric keypad to aid with data entry tasks. Some of the earliest PCs, including the Sol-20, CompuColor 8001 (both 1976), and the Commodore PET (1977) included tenkey-style numeric keypads on their keyboards. Steven Stengelīy the time the personal computer revolution arrived in the mid-1970s, numeric keypads came along for the ride. The Sol-20 personal computer from 1976 included a numeric keypad. As far back as 1951, the operator’s console for the UNIVAC I-one of the first commercial digital computers-included a numeric keypad on its keyboard. To find the origins of numeric keypads on computer keyboards, you have to reach back into the dawn of the digital computer itself. Numeric Keypads at the Beginning of Computers So when it came to data entry on computers, it was only natural to carry the standard tenkey layout forward.

Apple numeric keypad layout how to#

Generations of clerical workers learned how to operate tenkey machines for accounting-and later, for data entry on early tabulating machines. By the 1950s, tenkey had become a common key layout for adding machines on the market.Īs electronic adding machines took over from mechanical ones in the 1960s, the tenkey design carried forward. After the patent expired, many companies imitated Sundstrand’s tenkey design. Sundstrand’s company patented the design of the “tenkey” adding machine in 1914, and advertised the layout as being an easier, faster alternative to its competitor’s keypads.

The telephone layout originates from a 1960 usability study conducted by Bell Labs to determine the most efficient layout for Touch-Tone push-button telephone devices. Underwood SundstrandĬontrast this layout with a telephone keypad, which features the “1” key in the upper-left corner of the number grid. An ad for a Sundstrand adding machine with a “tenkey” design from 1934. The numbers count upward from 1 to 9 starting in the lower-left corner of the grid. In Sundstrand’s much simpler adding machine key layout, you can see the rudiments of now-standard setup: ten numeral keys, arranged in three rows of three with the “0” key beneath them.