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  2. Mechanical computer - Wikipedia

    en.wikipedia.org/wiki/Mechanical_computer

    A mechanical computer is a computer built from mechanical components such as levers and gears rather than electronic components. The most common examples are adding machines and mechanical counters , which use the turning of gears to increment output displays.

  3. Text entry interface - Wikipedia

    en.wikipedia.org/wiki/Text_entry_interface

    A digital pen is an input device which captures the handwriting or brush strokes of a user, converts handwritten analog information created using "pen and paper" into digital data, enabling the data to be utilized in various applications. For example, the writing data can be digitized and uploaded to a computer and displayed on its monitor.

  4. 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 ...

  5. Charles Babbage - Wikipedia

    en.wikipedia.org/wiki/Charles_Babbage

    This is an accepted version of this page This is the latest accepted revision, reviewed on 4 March 2025. English mathematician, philosopher, and engineer (1791–1871) "Babbage" redirects here. For other uses, see Babbage (disambiguation). Charles Babbage KH FRS Babbage in 1860 Born (1791-12-26) 26 December 1791 London, England Died 18 October 1871 (1871-10-18) (aged 79) Marylebone, London ...

  6. Optical character recognition - Wikipedia

    en.wikipedia.org/wiki/Optical_character_recognition

    Video of the process of scanning and real-time optical character recognition (OCR) with a portable scanner. Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene photo (for example the text on signs and ...

  7. Geniac - Wikipedia

    en.wikipedia.org/wiki/Geniac

    Geniac was an educational toy sold as a mechanical computer designed and marketed by Edmund Berkeley, with Oliver Garfield from 1955 to 1958, but with Garfield continuing without Berkeley through the 1960s. [1]

  8. Harvard Mark II - Wikipedia

    en.wikipedia.org/wiki/Harvard_Mark_II

    The Mark II is also known for being the computer with the first recorded instance of an actual bug (a moth) disrupting its operation. The insect was extracted from the machine's electronics and taped to the log book, with the note "first actual case of [a] bug being found", on September 9, 1947.

  9. Category:Electro-mechanical computers - Wikipedia

    en.wikipedia.org/wiki/Category:Electro...

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