Panasonic 840 (JE-840U)
The Panasonic 840 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 4 functions, 18 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA batteries.
Facts at a glance:
Feature | Value |
---|---|
Type | Arithmetic |
Functions | 4 |
Keys | 18 |
Precision | 8 |
Logic | Algebraic |
Display type | VFD |
Length | 140mm |
Width | 83mm |
Power Consumption | 0.500000W |
Power Source | 4xAA batteries |
Year introduced | 1974 |
Replacements:
If you have a Panasonic 840 that is no longer working, you can first try replacing the 4xAA batteries. 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: