This glorious specimen is an open hardware RPN calculator with more than a nod to the venerable Hewlett Packard HP42 in its ... you could wish for in a scientific calculator.

HP famously built the first portable scientific calculator, the HP-35, although its reverse-Polish notation (RPN) might be a bit of a head-scratcher to those of us who came up in the TI world of ...

Chips in early Busicom calculators were made in the United States by Mostek, while those in the Bowmar and Canon were by Texas Instruments. Hewlett-Packard Corporation joined the market in early 1972 ...

For most of us, a calculator might have been superseded by Excel or an app on a phone, yet there remains a die-hard ...

See how your savings and investment account balances can grow with the magic of compound interest. Many, or all, of the products featured on this page are from our advertising partners who ...

And this design continued on into the era of pocket calculators, financial calculators, and even scientific calculators such as the ones you may have used in school. Some of the latter were ...

If you’ve ever wondered how much of your monthly payment will go toward interest and how much will go toward principal, an amortization calculator is an easy way to get that information.

There are some exceptions to that rule—payday loans, for one—but using a loan calculator will help you determine whether the loan that you’re considering is fairly priced and right for you.

Scientific American covers the most important and exciting research, ideas and knowledge in science, health, technology, the environment and society. It is committed to sharing trustworthy ...

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HP — Hewlett Packard — is huge: It's the name on nearly 20% of every computer sold in 2023, placing it second behind Lenovo ...

Our car loan calculator estimates a monthly car payment and total loan cost based on vehicle price, interest rate and loan length. Try different calculator scenarios to determine the best auto ...