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  2. Light pen - Wikipedia

    en.wikipedia.org/wiki/Light_pen

    A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's cathode-ray tube (CRT) display. It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy.

  3. List of pen types, brands and companies - Wikipedia

    en.wikipedia.org/wiki/List_of_pen_types,_brands...

    A pen is a handheld device used to apply ink to a surface, usually paper, for writing or drawing. [1] Additional types of specialized pens are used in specific types of applications and environments such as in artwork, electronics, digital scanning and spaceflight, and computing.

  4. Rollerball pen - Wikipedia

    en.wikipedia.org/wiki/Rollerball_pen

    Close up of an extra fine roller ball pen next to something written with it. There are two main types of roller ball pens: liquid-ink pens and gel-ink pens.The "liquid-ink" type uses an ink and ink-supply system similar to a fountain pen, and they are designed to combine the convenience of a ballpoint pen with the smooth "wet ink" effect of a fountain pen.

  5. Pointing device - Wikipedia

    en.wikipedia.org/wiki/Pointing_device

    A light pen is a device similar to a touch screen, but uses a special light-sensitive pen instead of the finger, which allows for more accurate screen input. As the tip of the light pen makes contact with the screen, it sends a signal back to the computer containing the coordinates of the pixels at that point.

  6. Stylus (computing) - Wikipedia

    en.wikipedia.org/wiki/Stylus_(computing)

    A stylus was used to turn the dials. Later devices of this type include the Arithmometer, in the 1860s; and the Addiator, in 1920. [5] The Addiator was a pocket mechanical adding machine that used a stylus to move tiny rigid slices of sheet-metal that were enclosed in a case.

  7. Digital pen - Wikipedia

    en.wikipedia.org/wiki/Digital_pen

    A smart pen has the same basic characteristics as a digital pen, but also has other features like voice recording or a text scanner. A smart pen is generally larger and has more features than an active pen. Digital pens typically contain internal electronics and have features such as touch sensitivity, input buttons, memory for storing ...

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