Unisonic 940
The Unisonic 940 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAAA batteries.
Facts at a glance:
| Feature | Value | 
|---|---|
| Type | Arithmetic | 
| Functions | 5 | 
| Keys | 19 | 
| Precision | 8 | 
| Logic | Algebraic | 
| Display type | VFD | 
| Length | 95mm | 
| Width | 62mm | 
| Thickness | 23mm | 
| Power Source | 3xAAA batteries | 
| Year introduced | 1977 | 
| Year discontinued | 1978 | 
Replacements:
If you have a Unisonic 940 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: