Buttons, pull-up and debounce

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Use 10 kΩ pull-up resistors. Debounce with software delay or interrupts. Practice 2 uses RB4-RB7 interrupts for matrix keyboard.

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Buttons and digital inputs

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To read a button without bounce issues you should...

Use pull-up or pull-down and debounce in software or hardware Leave the pin floating Set TRIS as output Always disable GIE

If a pin has TRIS=1, it acts as...

Output Input Automatic PWM Reset

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