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Does need some fresh batteries Batteries are on low! Works fantastic and in great shape otherwise !
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Like the HP-20S, the HP-21S is also an algebraic calculator. “Untested” (??!). As per RSKEY, “There are two main differences between these calculators (the HP-20S and the HP-21S). First, scientific functions on the HP-20S, such as hyperbolic functions, unit conversions, or number base calculations are replaced with advanced statistical functions on the HP-21S; second, the set of built-in programs differs between the two machines.
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Unit does not power on. Batteries not included.
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HP 20 S Scientific Calculator Made in USA with original case. New batteries and Tested. See photos for more detailed condition. Feel free to ask any questions.
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As you can see from the pictures, this camera is in excellent condition! Fully tested and works great. Comes with slip case as pictured. All the pictures are of the actual item. We try to take as high resolution pictures as possible to fully be transparent to our buyers on the items we sell. We will ensure quick shipping after payment. If there is any issues with your order, please contact us as we will quickly resolve it. Please reach out to us if you have any questions. Thanks for looking at our listing!
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The Hewlett Packard 20S Scientific Calculator from 1987 is a vintage piece that is still in working condition. Made by HP in the United States, this calculator is a reliable tool for scientific calculations. With its retro design and functionality, it is a collector's item for those who appreciate vintage technology. *It’s been tested and works perfectly but needs new batteries.
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