The Omron 81M is an arithmetic calculator with 8 digits precision and algebraic logic. It has 4 functions, 22 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA sealed.
Facts at a glance:
|Power Source||4xAA sealed|
If you have an Omron 81M that is no longer working, you can first try replacing the 4xAA sealed 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: