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 ...

and for many engineers that calculator was from HP. Today’s students are more likely to have a TI or Casio calculator, but HP is still in there with the HP Prime. It is hard to call it a ...

For most of us, a calculator might have been superseded by Excel or an app on a phone, yet there remains a die-hard ...

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.

Hewlett-Packard's first direct-to-customer product was the HP-35 Scientific Calculator in 1972. The first product of its kind ...