Realmate PTT
The Realmate PTT is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 24 keys, and one of the early LCD (liquid crystal) displays which incorporated a yellow filter. The power source is 2x1.5V cell.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 7 |
| Keys | 24 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | YLCD |
| Length | 111mm |
| Width | 65mm |
| Thickness | 8mm |
| Power Consumption | 0.000200W |
| Power Source | 2x1.5V cell |
| Year introduced | 1977 |
| Year discontinued | 1977 |
Replacements:
If you have a Realmate PTT that is no longer working, you can first try replacing the 2x1.5V cell. 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: