Hewlett-Packard HP 75D (MERLIN)
The Hewlett-Packard HP 75D is a programmable calculator with 12 digits precision and formula input logic. It has 65 keys, and an LCD (liquid crystal) display. The power source is 3xAA batteries. Note: Can be programmed in Forth or assembly language.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Programmable |
| Keys | 65 |
| Precision | 12 |
| Logic | Formula |
| Display type | LCD |
| Printer | HP-IL |
| Length | 127mm |
| Width | 254mm |
| Thickness | 32mm |
| Weight | 737g |
| Power Source | 3xAA batteries |
| Year introduced | 1984 |
| Year discontinued | 1986 |
Replacements:
If you have a Hewlett-Packard HP 75D 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 model as a replacement: