HP Calculator Heritage HP 80 - 1973

The HP-80 is Hewlett-Packard´s second handheld calculator and their first business calculator. It was introduced in 1973 and discontinued in 1978. This advertisement appeared in the February 1973 issue of Scientific American.

Caption: Hewlett-Packard announces the most revolutionary financial device of our time: the HP-80.  The first pocket calculator in the world to give you 36 different financial capabilities.  Built-in 200 year calendar.  Simple, logical operation.  Goes everywhere with you.

Hewlett-Packard Company