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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. HP-25 - Wikipedia

    en.wikipedia.org/wiki/HP-25

    The HP-25 was a hand-held programmable scientific/engineering calculator made by Hewlett-Packard between early January 1975 and 1978. The HP-25 was introduced as a cheaper (US$195 MSRP) alternative to the ground-breaking HP-65. To reduce cost, the HP-25 omitted the HP-65's magnetic card reader, so it could only be programmed using the keyboard ...

  4. Key duplication - Wikipedia

    en.wikipedia.org/wiki/Key_duplication

    In the UK, the majority of the mobile locksmiths will have a dual key cutting machine on their van. The key duplication machine will be able to cut both cylinder and mortise keys, as these are the most popular types of keys in circulation. However, very few will carry a laser key cutting machine, which is sometimes needed to cut high security keys.

  5. Key code - Wikipedia

    en.wikipedia.org/wiki/Key_code

    The bitting code is used in conjunction with a key's Depth and Spacing Number to completely determine all relevant information regarding the key's geometry. [1] Each number in the bitting code corresponds to a cut on the key blade. For example, a bitting code of 11111 with Depth and Spacing Number 46 specifies a Kwikset key with five shallow cuts.

  6. Key (engineering) - Wikipedia

    en.wikipedia.org/wiki/Key_(engineering)

    An additional advantage is a stuck key can be removed from a shaft with a hammer blow, the circular profile will push the key out of the slot, as opposed to a standard key which will need to be pushed axially, or pulled out of its slot. Common applications include machine tools, automotive applications, snowblowers and marine propellers.

  7. Repair kit - Wikipedia

    en.wikipedia.org/wiki/Repair_kit

    The Mercedes-Benz OM604 engine has an optional repair kit to help replace seals. The 1905 Gale Model A came with a repair kit. In aerospace, kits have been developed for repairing the thermal protection tiles on the Space Shuttle and to fix space suits. [1] An electronics repair kit including different resistors. Professionals who repair and ...

  8. IBM System/360 Model 25 - Wikipedia

    en.wikipedia.org/wiki/IBM_System/360_Model_25

    The Model 25 logic is built on IBM SLT modules mounted on pluggable cards, which are plugged into printed circuit boards. The boards are mounted on hinged metal gates, and are interconnected by flat cables. The Model 25 is the first IBM system to store its microcode in a rewritable memory, called the control storage. The control storage uses an ...

  9. HP 200LX - Wikipedia

    en.wikipedia.org/wiki/HP_200LX

    Case closed. The HP 200LX Palmtop PC (F1060A, F1061A, F1216A), also known as project Felix, is a personal digital assistant introduced by Hewlett-Packard in August 1994. [1] [2] It was often called a Palmtop PC, and it was notable that it was, with some minor exceptions, a DOS-compatible computer in a palmtop format, complete with a monochrome graphic display, QWERTY keyboard, serial port, and ...