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  2. HP-65 - Wikipedia

    en.wikipedia.org/wiki/HP-65

    HP-65. The HP-65 is the first magnetic card-programmable handheld calculator. Introduced by Hewlett-Packard in 1974 at an MSRP of $795 [ 1] (equivalent to $4,912 in 2023) [ 2], it featured nine storage registers and room for 100 keystroke instructions. It also included a magnetic card reader/writer to save and load programs.

  3. Printed circuit board - Wikipedia

    en.wikipedia.org/wiki/Printed_circuit_board

    They can be up to 4 by 8 feet (1.2 by 2.4 m) in width and length. Varying cloth weaves (threads per inch or cm), cloth thickness, and resin percentage are used to achieve the desired final thickness and dielectric characteristics. Available standard laminate thickness are listed in ANSI/IPC-D-275. [23]

  4. ISO/IEC 7810 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_7810

    ISO / IEC 7810 sizes. Most banking cards and ID cards. Size may also be referred to as CR-80 or TD1 . Older-style ID cards. Visas. All card sizes have a thickness of 760 ± 80 μm, i.e. minimum 0.68 millimetres (0.027 in) and maximum 0.84 millimetres (0.033 in). The standard defines both metric and imperial measurements, noting that: [ 4]

  5. TI-59 / TI-58 - Wikipedia

    en.wikipedia.org/wiki/TI-59_/_TI-58

    TI-59 / TI-58. A TI-59 showing a magnetic storage card being inserted into the card reader in the side. The TI-59 is an early programmable calculator, that was manufactured by Texas Instruments from 1977. It is the successor to the TI SR-52, quadrupling the number of "program steps" of storage, and adding "ROM Program Modules" (an insertable ...

  6. Card stock - Wikipedia

    en.wikipedia.org/wiki/Card_stock

    An Oscar Friedheim card cutting and scoring machine from 1889. Card stock, also called cover stock and pasteboard, is paper that is thicker and more durable than normal writing and printing paper, but thinner and more flexible than other forms of paperboard . Card stock is often used for business cards, postcards, playing cards, catalogue ...

  7. Roll your own business cards with this 3D-printed embosser

    techcrunch.com/2016/08/22/roll-your-own-business...

    This wild 3D printed card roller lets you do just that. Built by maker Paul Myers, the embosser rolls paper between two 3D-printed tubes to press a design onto the card. You can take a look at the ...

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