Introdução
When you remove your calculators AAA batteries, or if they die, the backup battery powers the calculator so your information is not lost. If you seem to lose programs or variables in your calculator, you may want to replace your backup battery.
O que você precisa
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Remove the battery cover.
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Remove the AAA batteries from the calculator.
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Quase terminado!
To reassemble your device, follow these instructions in reverse order.
Conclusão
To reassemble your device, follow these instructions in reverse order.