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  2. Casio PB-1000 - Wikipedia

    en.wikipedia.org/wiki/Casio_PB-1000

    The Casio PB-1000 is a handheld computer released by Casio in 1987 (Released in Japan in 1986). It featured a touchscreen display which consisted of 16 keys built into the screen, arranged in fixed positions on a four by four matrix.

  3. These Calculators Make Quick Work of Standard Math ... - AOL

    www.aol.com/best-calculators-students...

    It doesn’t have the computing power of other models on the list, but the Canon LS-82Z is a dependable basic calculator. Shop Now. LS-82Z Handheld Calculator. amazon.com. $7.99.

  4. Sharp EL-8 - Wikipedia

    en.wikipedia.org/wiki/Sharp_EL-8

    The EL-8 was much smaller, small enough to be used in one's hand: 164 mm (6.46 in) long, 102 mm (4.02 in) wide, and 70 mm (2.76 in) thick, and weighing 0.72 kg (1.59 lb) with batteries. [6] Although it was still too bulky to easily fit in a pocket, [ 1 ] it was an important step toward the development of the pocket calculator.

  5. Casio fx-7000G - Wikipedia

    en.wikipedia.org/wiki/Casio_fx-7000G

    The user may save any program they create or are in the process of creating in one of ten programming slots, [7] a feature also used in the Casio BASIC handheld computer. The calculator uses a tokenized programming language (similar to the earlier FX-602P) which is well suited to writing more complex programs, as memory efficiency is a priority ...

  6. Curta - Wikipedia

    en.wikipedia.org/wiki/Curta

    A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.

  7. Sharp PC-1401 - Wikipedia

    en.wikipedia.org/wiki/Sharp_PC-1401

    The PC-1430 is a stripped-down variant of the PC-1401. The display and case are mostly the same (except for fewer keys), but the PC-1430 lacks the calculator modus (for calculations the BASIC mode has to be used), it offers less functions, only 2 KB RAM, and no speaker or buzzer.

  8. HP-71B - Wikipedia

    en.wikipedia.org/wiki/HP-71B

    It was also HP's first calculator based on the Saturn processor, later versions of which are found in the popular HP-48 series calculators and most more recent HP calculator models. Since the hand-pulled magnetic cards (HP-75 compatible) could only store two tracks of 650 bytes each, the card reader (installed under the logo plate above the ...

  9. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    Made in Japan, this was also the first calculator to use an LED display, the first hand-held calculator to use a single integrated circuit (then proclaimed as a "calculator on a chip"), the Mostek MK6010, and the first electronic calculator to run off replaceable batteries. Using four AA-size cells the LE-120A measures 4.9 by 2.8 by 0.9 inches ...