Montgomery Ward P100 (TXI-8661A)
The Montgomery Ward P100 is an arithmetic calculator with algebraic logic. It has 5 functions, 19 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 3xAA batteries. Note: TI Exactra
Facts at a glance:
| Feature | Value | 
|---|---|
| Type | Arithmetic | 
| Functions | 5 | 
| Keys | 19 | 
| Logic | Algebraic | 
| Display type | LED | 
| Length | 127mm | 
| Width | 70mm | 
| Power Source | 3xAA batteries | 
| Year introduced | 1975 | 
Replacements:
If you have a Montgomery Ward P100 that is no longer working, you can first try replacing the 3xAA 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: