Hewlett-Packard HP 49G
The Hewlett-Packard HP 49G is a graphing calculator with RPN (reverse polish notation) logic. It has an LCD (liquid crystal) display. The power source is 3xAAA.
Facts at a glance:
If you have a Hewlett-Packard HP 49G 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: