The APF 1902 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 25 keys, and an LCD (liquid crystal) display. The power source is 2xAA.
Facts at a glance:
If you have an APF 1902 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 models as possible replacements: