The MBO Rechen-Trainer is an arithmetic calculator with algebraic logic. It has 4 functions, 16 keys, and a VFD (vacuum fluorescent) display. The power source is 2xAA. Note: Teaching calculator
Facts at a glance:
If you have a MBO Rechen-Trainer 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: