Question about Texas Instruments TI-83 Plus Silver Edition Calculator
My Ti-89 is only a few months old, but I've already had to use three sets of batteries. It always comes up with illegal instruction when I put in new batteries. I've only used the calculator minamally, for basic graphs and such. I haven't even connected it to my computer or use it for games. Why is my nearly new Ti-89 draining my battery so quickly?
Because the games programs are writen badly and are running even when the calculator is off. Battery life will be extended if you get rid of the games.
Posted on Sep 23, 2009
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Posted on Jan 02, 2017
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