Busicom 812 (Colex)
The Busicom 812 is an arithmetic calculator with 8 digits precision and algebraic logic. It has a VFD (vacuum fluorescent) display. The power source is 4xAA. Note: Made by Colex.
Facts at a glance:
If you have a Busicom 812 that is no longer working, you can first try replacing the 4xAA 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: