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  2. Keypunch - Wikipedia

    en.wikipedia.org/wiki/Keypunch

    A key punch room in the 1960s Hand-operated keypunch (manufactured by British ICT) (1960s) Most IBM keypunch and verifiers used a common electrical/mechanical design in their keyboards to encode the mechanical keystrokes. As a key was depressed, a link on the keystem tripped a corresponding set of bails at the top of the keyboard assembly.

  3. Silca S.p.A. - Wikipedia

    en.wikipedia.org/wiki/Silca_S.p.A.

    Silca S.p.A. is a manufacturer of keys, key cutting machines, semi industrial and industrial key cutting machines. [1] Silca S.p.A. is a subsidiary of Kaba Group, a provider of selected segments of the security industry. Kaba Holding AG is listed on the SIX Swiss Stock Exchange and employs around 7,500 people in more than 60 countries. Silca ...

  4. Unican Security Systems - Wikipedia

    en.wikipedia.org/wiki/Unican_Security_Systems

    Unican Security Systems Ltd. was a Canada-based company created by Aaron Fish in the 1960s and sold in 2000.At its sale (to Kaba Group), the company had over $800 million in sales annually and was the largest maker of key blanks and key copying machines in the world.

  5. Punched card - Wikipedia

    en.wikipedia.org/wiki/Punched_card

    Punched cards were once common in data processing and the control of automated machines. Punched cards were widely used in the 20th century, where unit record machines, organized into data processing systems, used punched cards for data input, output, and storage. [3] [4] The IBM 12-row/80-column punched card format came to dominate the industry.

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    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  7. Teletype Model 33 - Wikipedia

    en.wikipedia.org/wiki/Teletype_Model_33

    The machine weighs 75 pounds (34 kg) on the stand, including paper. It requires less than 4 amperes at 115 VAC 60 Hz. The recommended operating environment is a temperature of 40 to 110 °F (4 to 43 °C), a relative humidity of between 2 and 95 percent, and an altitude of 0 to 10,000 feet (0 to 3,048 m).

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