Hewlett-Packard HP 48GPlus (Charlemagne ?)
The Hewlett-Packard HP 48GPlus is a graphing calculator with 10 digits precision and RPN (reverse polish notation) logic. It has 2600 functions, 49 keys, and an LCD (liquid crystal) display. The power source is 3xAAA. Note: HP48G with 128Kb RAM.
Facts at a glance:
If you have a Hewlett-Packard HP 48GPlus that is no longer working, you can first try replacing the 3xAAA 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: