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  2. Programmable calculator - Wikipedia

    en.wikipedia.org/wiki/Programmable_calculator

    Calculators supporting such programming were Turing-complete if they supported both conditional statements and indirect addressing of memory. Notable examples of Turing complete calculators were Casio FX-602P series, the HP-41 and the TI-59. Keystroke programming is still used in mid-range calculators like the HP 35s and HP-12C.

  3. Programma 101 - Wikipedia

    en.wikipedia.org/wiki/Programma_101

    A total of 40,000 units were sold; 90% of them in the United States where the sale price was $3,200 [4] (increasing to about $3,500 in 1968. [7]) About 10 [19] Programma 101 were sold to NASA and used to plan the Apollo 11 landing on the Moon. By Apollo 11 we had a desktop computer, sort of, kind of, called an Olivetti Programma 101.

  4. Cash register - Wikipedia

    en.wikipedia.org/wiki/Cash_register

    In 1884 Eckert sold the company to John H. Patterson, who renamed the company the National Cash Register Company and improved the cash register by adding a paper roll to record sales transactions, thereby creating the journal for internal bookkeeping purposes, and the receipt for external bookkeeping purposes. The original purpose of the ...

  5. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    A printing calculator, in addition to a display panel, has a printing unit that prints results in ink onto a roll of paper, using a printing mechanism. Processor chip (microprocessor or central processing unit). The interior of a Casio FX-991s calculator

  6. HP-65 - Wikipedia

    en.wikipedia.org/wiki/HP-65

    The HP-65 was one of the first calculators to include a base conversion function, although it only supported octal (base 8) conversion. It could also perform conversions between degrees/minutes/seconds ( sexagesimal ) and decimal degree ( sexadecimal ) values, as well as polar/cartesian coordinate conversion.

  7. HP 35s - Wikipedia

    en.wikipedia.org/wiki/HP_35s

    The HP 35s (F2215A) is a Hewlett-Packard non-graphing programmable scientific calculator. Although it is a successor to the HP 33s, it was introduced to commemorate the 35th anniversary of the HP-35, Hewlett-Packard's first pocket calculator (and the world's first pocket scientific calculator).

  8. HP-12C - Wikipedia

    en.wikipedia.org/wiki/HP-12C

    The Aurora FN1000 calculator in clamshell design was closely inspired by the HP-12C in 2003. Capitalizing on the limited availability of the HP 12c Platinum 25th Anniversary Edition, Victor Technology released the Victor V12 in 2007 which was a budget priced clone of the HP 12c Platinum edition.

  9. Monroe Systems for Business - Wikipedia

    en.wikipedia.org/wiki/Monroe_Systems_for_Business

    Monroe Systems for Business is a provider of electric calculators, printers, and office accessories such as paper shredders to business clients. [1] Originally known as the Monroe Calculating Machine Company, it was founded in 1912 by Jay Randolph Monroe as a maker of adding machines and calculators based on a machine designed by Frank Stephen Baldwin.

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