Prinztronic 400 (M400)
The Prinztronic 400 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 25 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is PP3 9V battery. Note: Kingsonic 5000; Satek 8M (version 1); Texet 880 Executive; Unisonic 1541L
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 6 |
| Keys | 25 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LED |
| Length | 135mm |
| Width | 77mm |
| Thickness | 22mm |
| Weight | 86g |
| Power Source | PP3 9V battery |
| Year introduced | 1978 |
| Year discontinued | 1978 |
Replacements:
If you have a Prinztronic 400 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: