| Brand: | Radofin |
| Model: | 1640 |
| Type: | Calculator |
| Picture: |
|
| Batteries: | 9V x 1 |
| Lifetime: |
Introduced: ca. 1975 Terminated: unknown |
| Notes: |
Plain 8-digit calculator with memory
and the percentage operation. Its buttons need to be pressed
firmly and have a wonderful click. Its LED display is magnified
making it clearly readable. The numbers 9 and 6 are shown in a
particular way. The 9 misses its bottom segment, the 6 misses its
upper segment. Cloud this be to save a tiny little bit of battery
power?
Operations are automatically repeated when pressing the = key again. Errors are indicated by lighting up all decimal points.ion. TANDY has an OEM version of the same calculator, the TANDY EC-330. I would like to thank Gerard Heijmeriks for donating this calculator to the museum. |
©2025 Ernst Mulder