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Modern Dell keyboard customised with ECMA23/ISO layout. IBM keyboard with Japanese EMCA23/ANSI layout. ECMA-23 is a standard for a bit-paired keyboard layout adopted in 1969 and revised in 1975. As a bit-paired layout, shifted keys correspond to toggling bits in the ASCII keycode.
A Dell Latitude E4310 laptop with a pointing stick (upper middle) and a touchpad (bottom). They were commonly featured together on Dell Latitude laptops, beginning in the late 1990s. The pointing stick can be used in ultra-compact netbooks [13] where there would be no place for a touchpad.
Typing on a laptop keyboard. A computer keyboard is a built-in or peripheral input device modeled after the typewriter keyboard [1] [2] which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches.
On some keyboards, if both Shift keys are held down simultaneously only some letters can be typed. For example, on the Dell keyboard Model RT7D20 only 16 letters can be typed. This phenomenon is known as "masking" and is a fundamental limitation of the way the keyboard electronics are designed. [4]
Mechanical keyboards (or mechanical-switch keyboards) are computer keyboards which have an individual switch for each key. The following table is a compilation list of mechanical keyboard models, brands, and series:
Dell Latitude is a line of laptop computers manufactured and sold by American company Dell ... 12.3" Convertible Ultraportable, detachable keyboard (7th gen Core i3 ...
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