Casio CQ-1 (COMPUTER QUARTZ CQ-1)
The Casio CQ-1 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 4 functions, 23 keys, and a VFD (vacuum fluorescent) display. The power source is AA+2x1.5V mercury cell batteries. The calculator was manufactured in Japan.
Facts at a glance:
|Power Source||AA+2x1.5V mercury cell|
You can download the Casio CQ-1 manual from this external link.
If you have a Casio CQ-1 that is no longer working, you can first try replacing the AA+2x1.5V mercury cell battery. 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: