Sharp EL-531LH (ADVANCED D.A.L.)
The Sharp EL-531LH is a scientific calculator with 10 digits precision and formula input logic. It has 43 keys, and an LCD (liquid crystal) display. The power source is 2xAA. A sample of this calculator is held in the calculator.org collection.
Facts at a glance:
If you have a Sharp EL-531LH 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: