T Research 887D
The T Research 887D is an arithmetic calculator with algebraic logic. It has 23 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is PP3 9V battery.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Keys | 23 |
| Logic | Algebraic |
| Display type | LED |
| Power Source | PP3 9V battery |
| Year introduced | 1975 |
Replacements:
If you have a T Research 887D that is no longer working, you can first try replacing the PP3 9V battery. 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: