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2. Touchscreen - Wikipedia

   en.wikipedia.org/wiki/Touchscreen

   A touchscreen (or touch screen) is a type of display that can detect touch input from a user. It consists of both an input device (a touch panel) and an output device (a visual display). The touch panel is typically layered on the top of the electronic visual display of a device.

3. 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.

4. Stylus (computing) - Wikipedia

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

   several styluses; (l to r) PalmPilot Professional, Fossil Wrist PDA, Nokia 770, Audiovox XV6600, HP Jornada 520, Sharp Zaurus 5500, Fujitsu Lifebook P-1032 In computing, a stylus (or stylus pen) is a small pen-shaped instrument whose tip position on a computer monitor can be detected.

5. HP Slate 500 - Wikipedia

   en.wikipedia.org/wiki/HP_Slate_500

   It is an 8.9" capacitive multi-touch screen supporting 1024×600 pixel resolution with digitizer and pen support. [1] The Slate is powered by a 1.86 GHz Intel Atom Z540 processor with 2GB DDR2 of RAM, 64GB of onboard solid-state flash storage, and one standard USB 2.0 port.

6. Pen computing - Wikipedia

   en.wikipedia.org/wiki/Pen_computing

   Pen computing refers to any computer user-interface using a pen or stylus and tablet, over input devices such as a keyboard or a mouse.. Historically, pen computing (defined as a computer system employing a user-interface using a pointing device plus handwriting recognition as the primary means for interactive user input) predates the use of a mouse and graphical display by at least two ...

7. Text entry interface - Wikipedia

   en.wikipedia.org/wiki/Text_entry_interface

   A light pen can also allow users draw on the screen with great positional accuracy. It consists of a photocell and an optical system placed in a small tube. When the tip of a light pen is moved over the monitor screen and pen button is pressed, its photocell sensing element detects the screen location and sends the corresponding signal to the CPU.