This calculator is great up through college but once you reach levels such as majoring in math in a university the thing is not good enough to work on. It is however a great improvement from the TI-83+ as it is much faster to work on with almost no loading times unless you are doing really long functions.
Anyway the reason I am writing here is because many people report to the calculator to be "dead". I have been around many classmates, teachers, and family that use this calculator and not once has the thing "died" where replacing the batteries will not fix it. Instead usually it is just a contrast problem where the calculator is adjusted to maximum brightness and it may appear that the screen is off instead of on. To fix this it is simple. Replace the batteries, Press the on button, press 2nd and then hold down the up arrow and the unit should be "fixed". I hope this helps because I know for a fact that these things don't "die".Get more detail about Texas Instruments TI-83 Plus Graphing Calculator.
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