The Aristo M800 is a scientific calculator with 11 digits precision and algebraic logic. It has 35 keys, and one of the early LCD (liquid crystal) displays which incorporated a yellow filter. The power source is 3x mercury cell.
Facts at a glance:
|Power Source||3x mercury cell|
If you have an Aristo M800 that is no longer working, you can first try replacing the 3x mercury 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: