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Digital calculators with varieties of features useful for students and professionals. These devices are good for calculus, trigonometry, engineering, financial, and other types of problems.

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TI 42s calculator won't turn on with fresh batteries

I have an old and valued TI 42S and it will not turn on even with fresh batteries properly installed. Any advice?

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What type of battery does it use? If AA type check pins are clean and have no corrosion.

If flat disc type then make sure the side pin (usually holds the battery in place) is over far enough to make contact with the side of the battery.

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Lindy Johnson 将永远感激不已
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