Question: please solve both p and pp and provide the code you used Pass: Using the interrupt hardware for pushbutton, display a non - alphanumeric symbol

please solve both p and pp and provide the code you used Pass: Using the interrupt hardware for pushbutton, display a non-alphanumeric symbol on the LCD.
Pass Plus: Using timer interrupt(not delay, micros, millis) make an LED turn on for 1 second and then
off for 3.5 seconds.
please solve both p and pp and provide the code

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