The Sharp CT-555 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 26 keys, and an LCD (liquid crystal) display. The power source is 4xLR43.
Facts at a glance:
If you have a Sharp CT-555 that is no longer working, you can first try replacing the 4xLR43 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: