Scientific calculator by Casio. Widely used by students world-wide due to its great quality for the low price.
ara ara @araara
Rep: 1
Posted: Sep 7, 2021
My calculator is not turning on
Is this a good question?
jayeff @jayeff
Rep: 453k
11
368
1.4k
Posted: Sep 8, 2021
Hi,
Have you tried replacing the battery you didn’t say?
Casio FX-991ES Plus Battery Replacement
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