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  2. Keyboard technology - Wikipedia

    en.wikipedia.org/wiki/Keyboard_technology

    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 ...

  3. Logitech - Wikipedia

    en.wikipedia.org/wiki/Logitech

    Logitech International S.A. (/ ˈ l ɒ dʒ ɪ t ɛ k / LOJ-i-tek) is a Swiss multinational manufacturer of computer peripherals and software.Headquartered in Lausanne, Switzerland, [1] the company has offices throughout Europe, Asia, Oceania, and the Americas, and is one of the world's leading manufacturers of input and interface devices for personal computers (PCs) and other digital products.

  4. Print Screen - Wikipedia

    en.wikipedia.org/wiki/Print_Screen

    A 104-key PC US English keyboard layout with Print Scrn circled. Print Screen (often abbreviated Print Scrn, Prnt Scrn, Prnt Scr, Prt Scrn, Prt Scn, Prt Scr, Prt Sc, Pr Sc, or PS) is a key present on most PC keyboards. It is typically situated in the same section as the break key and scroll lock key. The print screen may share the same key as ...

  5. Dot matrix printing - Wikipedia

    en.wikipedia.org/wiki/Dot_matrix_printing

    The MX-80 combined affordability with good-quality text output (for its time). Early impact printers (including the MX) were notoriously loud during operation, a result of the hammer-like mechanism in the print head. The MX-80's low dot density (60 dpi horizontal, 72 dpi vertical) produced printouts of a distinctive "computerized" quality.

  6. List of keyboard switches - Wikipedia

    en.wikipedia.org/wiki/List_of_keyboard_switches

    Cherry MX equivalent Switch Type Actuation force Tactile force Actuation point Total travel Product code Durability (actuations) Cherry: Cherry: Black [1] Cherry MX Black: Linear: 0.60 N: N/A: 2.0 mm: 4.0 mm: MX1A-11xx >100 million Cherry: Cherry: Red [2] Cherry MX Red: Linear: 0.45 N: N/A: 2.0 mm: 4.0 mm: MX1A-L1xx >100 million Cherry: Cherry ...

  7. Screen printing - Wikipedia

    en.wikipedia.org/wiki/Screen_printing

    Screen printing is a printing technique where a mesh is used to transfer ink (or dye) onto a substrate, except in areas made impermeable to the ink by a blocking stencil.A blade or squeegee is moved across the screen in a "flood stroke" to fill the open mesh apertures with ink, and a reverse stroke then causes the screen to touch the substrate momentarily along a line of contact.

  8. Monotype system - Wikipedia

    en.wikipedia.org/wiki/Monotype_System

    A Monotype keyboard; the tape reel being produced is at the top. A Monotype keyboard allows a keyboard operator to prepare a perforated paper tape, called ribbon, that will direct the casting of type separately from its actual casting. The keyboard on which the operator types is removable, as is a set of keybars under the keys; the keybars ...

  9. DECwriter - Wikipedia

    en.wikipedia.org/wiki/DECwriter

    The 63-key keyboard followed the ANSI X4.14-1971 typewriter layout, and included a further 19 keys for numeric input and various controls. The tractor feed was much more flexible, with a horizontally-fixed pin-drive on the left and an adjustable one on the right, allowing it to feed paper from 3 to 14.875 inches (76.2 to 377.8 mm) wide and to ...