Adler 84F (EC27)
The Adler 84F is a finance calculator with 8 digits precision and algebraic logic. It has 25 functions, 20 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAAA. Note: Has an optional switched RPN mode.
Facts at a glance:
If you have an Adler 84F that is no longer working, you can first try replacing the 4xAAA 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: