
If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. If you have a Texas Instruments TI-84 Plus SE that is no longer working, you can first try replacing the 4xAAA + CR1620 3V batteries. The calculator was manufactured in Taiwan. It has 50 keys, and an LCD (liquid crystal) display. CalcPal® Graphing Calculator / Cell Phone Storage Pocket Chart. The Texas Instruments TI-84 Plus SE is a graphing calculator with 10 digits precision and formula input logic.

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