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How to adjust the HP Prime calculator's screen refresh rate, this will reduced flickering or increase flickering depending if you increse or decrease the refresh rate.

Out of the box this is set to 50% by default.

Hold down O, then, while still holding O, press and hold SHIFT, and then tap + to increase the refresh rate or - to decrease it.

Note!

Increasing will normaly result in less battery life, were decreasing should use less of your battery.

How to adjust the HP Prime calculator's screen brightnes, this will reduced screen brightness or increase brightness

Hold down O, then, while still holding O tap + to increase the brightness or - to decrease it.

Note!

Increasing will normaly result in less battery life, were decreasing will use less of your battery.