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  2. Computer maintenance - Wikipedia

    en.wikipedia.org/wiki/Computer_maintenance

    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.

  3. Computer repair technician - Wikipedia

    en.wikipedia.org/wiki/Computer_repair_technician

    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.

  4. Keyboard technology - Wikipedia

    en.wikipedia.org/wiki/Keyboard_technology

    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.

  5. Computer keyboard - Wikipedia

    en.wikipedia.org/wiki/Computer_keyboard

    Computer keyboards include control circuitry to convert key presses into key codes [41] (usually scancodes) that the computer's electronics can understand. The key switches are connected via the printed circuit board in an electrical X-Y matrix where a voltage is provided sequentially to the Y lines and, when a key is depressed, detected ...

  6. Keyboard protector - Wikipedia

    en.wikipedia.org/wiki/Keyboard_protector

    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.

  7. Typewriter - Wikipedia

    en.wikipedia.org/wiki/Typewriter

    The QWERTY keyboard layout, developed for typewriters in the 1870s, remains the de facto standard for English-language computer keyboards. The origins of this layout still need to be clarified. [ 5 ] Similar typewriter keyboards, with layouts optimised for other languages and orthographies, emerged soon afterward, and their layouts have also ...

  8. Text entry interface - Wikipedia

    en.wikipedia.org/wiki/Text_entry_interface

    The Dvorak keyboard is designed so that the middle row of keys includes the most common letters, with the goal of allowing greater efficiency and comfort while typing. These keyboards usually contains letters, numbers, currency sign(s), punctuation, function and control keys, arrow keys, a keypad, and may include a wristpad.

  9. Laptop - Wikipedia

    en.wikipedia.org/wiki/Laptop

    A laptop computer or notebook computer, also known as a laptop or notebook, is a small, portable personal computer (PC). Laptops typically have a clamshell form factor with a flat-panel screen on the inside of the upper lid and an alphanumeric keyboard and pointing device on the inside of the lower lid.