KEYBOARD Work done by Rigliano and Ratti


A computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act. A keyboard typically has characters engraved or printed on the keys (buttons) and each press of a key typically corresponds to a single written symbol. While most keyboard keys produce letters, numbers or signs (characters), other keys or simultaneous key presses can produce actions or execute computer commands



Desktop computer keyboards, include alphabetic characters, punctuation symbols, numbers and a variety of function keys.


Flexible keyboards are a junction between normal type and laptop type keyboards: normal from the full arrangement of keys, and laptop from the short key distance. Is attaches to a computer through a USB connection or serial port.The flexibility allows the user to fold/roll the keyboard for better storage and transfer. The vast majority of flexible keyboards in the market are made from silicone; this material makes them water and dust proof


A thumb keyboard, is a type of keyboard commonly found on mobile phones, which has a familiar layout to an ordinary keyboard. The inputting surface is usually relatively small, and is intended for typing using the available thumbs, while holding the device. Numeric keyboards contain only numbers, mathematical symbols for addition, subtraction, multiplication, and division, a decimal point, and several function keys.


Handheld ergonomic keyboards are designed to be held like a game controller. Typically handheld keyboards hold all the alphanumeric keys and symbols that a standard keyboard would have, yet only be accessed by pressing two sets of keys at once; Handheld keyboards allow the user the ability to move around a room while also being able to type in front or away from the computer.


Keyboards on laptops and notebook computers usually have a shorter travel distance for the keystroke, shorter over travel distance, and a reduced set of keys. They may not have a numerical keypad, and the function keys may be placed in locations that differ from their placement on a standard, full-sized keyboard.


Multifunctional keyboards provide additional function beyond the standard keyboard. Many are programmable, configurable computer keyboards and some control multiple PCs, workstations and other information sources usually in multi-screen work environments. Users have additional key functions as well as the standard functions and can typically use a single keyboard and mouse to access multiple sources.


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