Panasonic 660 (JE-660U)
The Panasonic 660 is an arithmetic calculator with 6 digits precision and algebraic logic. It has 5 functions, 18 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA. Note: Olympia CD 60. Display has 6 digits - 12 digits internal precision.
Facts at a glance:
If you have a Panasonic 660 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: