They haven’t been produced in decades, but [Chris Chung] has used some open source code to create DIY hardware version of the HP-41 Reverse Polish Notation (RPN) calculator. The open source code ...

Why reach for a bland, commercially available calculator when you be using a model that employs RPN (Reverse Polish ... everything you could wish for in a scientific calculator.

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 ...

HP-branded calculators were famous for using this input method, and engineers who came of age in the '70s and '80s still ...

For most of us, a calculator might have been superseded by Excel or an app on a phone, yet there remains a die-hard ...

Cointelegraph’s crypto calculator and converter tool provides an easy way to calculate the fiat currency (USD, AUD and EUR) value of certain crypto assets. Medical device firm Semler Scientific ...

Scientific papers are for sharing your own original research work with other scientists or for reviewing the research conducted by others. As such, they are critical to the evolution of modern ...

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 ...

Check the currency rates against all the world currencies here. The currency converter below is easy to use and the currency rates are updated frequently. This is very much needed given the ...

Mashable reviews quite a few laptops every year, and one of the most reliable laptop brands we've tested is HP. That said, multiple great options can be a double-edged sword. How do you narrow it ...

We cover the spread of Marburg virus, a stem cell treatment for diabetes and the way dolphins smile in this week’s news roundup.