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![]() ![]() If you have a Texas Instruments TI-84 Plus that is no longer working, you can first try replacing the 4xAAA + CR1620 3V batteries. Press MODE, ALPHA and S keys simultaneously. Be sure to back up any important information held in the calculator before running these tests. Note that diagnostic tests generally delete any data on the calculator. The calculator was manufactured in Taiwan. It has 50 keys, and an LCD (liquid crystal) display. The Texas Instruments TI-84 Plus is a graphing calculator with 10 digits precision and formula input logic. The calculator home page Home Download FAQ Online Calc Articles Database Resources About ☰ Texas Instruments TI-84 Plus
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