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A text entry interface or text entry device is an interface that is used to enter text information in an electronic device. A commonly used device is a mechanical computer keyboard. Most laptop computers have an integrated mechanical keyboard, and desktop computers are usually operated primarily using a keyboard and mouse.
Typewriters are the definitive ancestor of all key-based text entry devices, but the computer keyboard as a device for electromechanical data entry and communication largely comes from the utility of two devices: teleprinters (or teletypes) and keypunches. It was through such devices that modern computer keyboards inherited their layouts.
When not transferring text, the AlphaSmart could be used as a standard keyboard. AlphaSmarts were very popular in schools [ citation needed ] for their affordability and durability. Elementary schools and high schools used them; and they were particularly popular among special education departments for use by students with graphomotor challenges.
The Natural Keyboard sold over 600,000 per month at its peak. [7] Over 3 million units had been sold by February 1998, when its successor, the Natural Keyboard Elite, was introduced. [11] Microsoft Natural Keyboard Elite. Like the original Natural Keyboard, the Elite was manufactured by Key Tronic, who also assisted in its development. [8]
A keyboard is a human interface device which is represented as a matrix of buttons. Each button, or key, can be used to either input an alphanumeric character to a computer, or to call upon a particular function of the computer.
A keyset or chorded keyboard (also called a chorded keyset, chord keyboard or chording keyboard) is a computer input device that allows the user to enter characters or commands formed by pressing several keys together, like playing a "chord" on a piano. The large number of combinations available from a small number of keys allows text or ...
On-screen keyboard controlled with the mouse can be used by users with limited mobility. Optical character recognition (OCR) is preferable to rekeying for converting existing text that is already written down but not in machine-readable format (for example, a Linotype-composed book from the 1940s). In other words, to convert the text from an ...
One measure of performance for text entry systems is "key strokes per character" (kspc). As a baseline the full English PC keyboard has a kspc of 1 as precisely one key stroke is required per typed character. Scott Mackenzie and other academics presented with Eatoni that they had evaluated LetterWise to have a kspc of 1.15 for English.