Hewlett-Packard HP 40gs (F2225AA)
The Hewlett-Packard HP 40gs is a graphing calculator with algebraic logic. It has 600 functions, 51 keys, and an LCD (liquid crystal) display. The power source is 4xAAA + 1.5V cell.
Facts at a glance:
|Power Source||4xAAA + 1.5V cell|
If you have a Hewlett-Packard HP 40gs that is no longer working, you can first try replacing the 4xAAA + 1.5V cell 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: