Hewlett-Packard HP 29C (Woodstock BONNIE)
The Hewlett-Packard HP 29C is a programmable calculator with 12 digits precision and RPN (reverse polish notation) logic. It has 75 functions, 30 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 2xAA.
Facts at a glance:
If you have a Hewlett-Packard HP 29C that is no longer working, you can first try replacing the 2xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement: