The Sharp EL-504 is a programmable calculator with 10 digits precision and algebraic logic. It has 40 keys, and an LCD (liquid crystal) display. The power source is 2xAA.
Facts at a glance:
If you have a Sharp EL-504 that is no longer working, you can first try replacing the 2xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement: