Texas Instruments TI-1766 PLUS
 
  The Texas Instruments TI-1766 PLUS is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 25 keys, and an LCD (liquid crystal) display. The power source is LR54. The calculator was manufactured in China.
Facts at a glance:
| Feature | Value | 
|---|---|
| Type | Arithmetic | 
| Functions | 7 | 
| Keys | 25 | 
| Precision | 8 | 
| Logic | Algebraic | 
| Display type | LCD | 
| Length | 132mm | 
| Width | 74mm | 
| Thickness | 9mm | 
| Power Source | LR54 | 
| Country | China | 
| Year introduced | 1996 | 
| Year discontinued | 1999 | 
Replacements:
If you have a Texas Instruments TI-1766 PLUS that is no longer working, you can first try replacing the LR54. 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: