Hewlett-Packard

3 articles and 1 project.

Writing

Mon Jul 20 2026

Hello Calc: a homage to every HP calculator

I have rebuilt thirty-five HP calculators, from the 1972 HP-35 to the HP Prime, as a single web app. Not an emulator, but a reimplementation in TypeScript.

Mon Jul 20 2026

Thu Aug 14 1997

Electronic Commerce and the Consumer

A 1997 talk on why consumers were hesitating over online shopping, what that meant for bank delivery channels, and the privacy law Australia did not yet have.

Thu Aug 14 1997

Mon Nov 25 1991

The HP 48, and two programs I wrote for it

I have loved HP calculators all my life, and the HP 48 was the first I bought with my own hard earned money. In 1991 I taught mine the foreign exchange market and how to price a bond.

Mon Nov 25 1991

Projects

Hello Calc

A homage to every HP calculator, from the 1972 HP-35 to the HP Prime. Thirty-five models reimplemented in TypeScript on one shared engine, running in your browser.