Casio fx-83WA (S-V.P.A.M.)
The Casio fx-83WA is a scientific calculator with 12 digits precision and formula input logic. It has 50 keys, and an LCD (liquid crystal) display. The power source is LR44. A sample of this calculator is held in the calculator.org collection.
Facts at a glance:
Note that diagnostic tests generally delete any data on the calculator. Be sure to back up any important information held in the calculator before running these tests.
Hold down SHIFT key and press reset button (on reverse - press pin into hole marked P). Press SHIFT to cycle through 5 display tests. Press REPLAY> key to enter keypad test (display flickers when a key is pressed). Use reset button to exit test.
If you have a Casio fx-83WA that is no longer working, you can first try replacing the LR44 battery. 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: