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A plastic-cleaning agent applied to the surface of the keys with a cloth is used to remove the accumulation of oil and dirt from repeated contact with a user's fingertips. If this is not sufficient for a more severely dirty keyboard, keys are physically removed for more focused individual cleaning, or for better access to the area beneath.
A keyboard protector or keyboard cover is a device which is placed on top of a computer keyboard in order to reduce contact with the environment. Keyboards are susceptible to corrosion damage from liquid spills and build up of dust and debris, requiring frequent cleaning and maintenance.
A keyboard matrix circuit is a design used in most electronic musical keyboards and computer keyboards in which the key switches are connected by a grid of wires, similar to a diode matrix. For example, 16 wires arranged in 8 rows and 8 columns can connect 64 keys—sufficient for a full five octaves of range (61 notes).
Computer malfunctions can range from a minor setting that is incorrect, to spyware, viruses, and as far as replacing hardware and an entire operating system. Some technicians provide on-site services, usually at an hourly rate. Others can provide services off-site, where the client can drop their computers and other devices off at the repair shop.
The technology of computer keyboards includes many elements. Many different keyboard technologies have been developed for consumer demands and optimized for industrial applications. The standard full-size (100%) computer alphanumeric keyboard typically uses 101 to 105 keys; keyboards integrated in laptop computers are typically less comprehensive.
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.
Conventional keyboards include feet that can be deployed under the top of the keyboard, which generates a positive slope: the topmost rows (F1– F12 function keys) are higher than the bottom rows (space), which would require the user to tilt their wrists up. Ergonomic keyboards may use a riser under the front to create a neutral or negative ...
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: