The slide rule sword gave way to calculators hanging from your belt loop, and for many engineers that calculator was from HP. Today’s students are more likely to have a TI or Casio calculator ...

Unlike other HP calculators, the HP-01 did not use RPN. For such a hefty ... including some that had scientific functions. These were the first calculator watches to use LCDs.

For most of us, a calculator might have ... The sibling HP-12C Platinum... Financial calculators are not to be confused with ...