Casio M-800 (M-800)
The Casio M-800 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 4 functions, 18 keys, and one of the early LCD (liquid crystal) displays which incorporated a yellow filter. The power source is LR44 1.5V. The calculator was manufactured in Japan.
Facts at a glance:
|Power Source||LR44 1.5V|
If you have a Casio M-800 that is no longer working, you can first try replacing the LR44 1.5V battery. 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: