The Unisonic 911-C is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAAA. The calculator was manufactured in Japan. Note: Photo supplied by Chris Lewis - CLewis at HachUltra.com
Facts at a glance:
If you have a Unisonic 911-C that is no longer working, you can first try replacing the 3xAAA 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: