Brother 508SR (PROCAL 508SR)
The Brother 508SR is a scientific calculator with algebraic logic. It has 20 functions, 26 keys, and a VFD (vacuum fluorescent) display. The power source is 2xAA.
Facts at a glance:
If you have a Brother 508SR 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 model as a replacement: