Question: In order to do this: Write a program to output a square wave to turn on the LED connected at pin PL2 . then to

In order to do this: Write a program to output a square wave to turn on the LED connected at pin PL2 . then to make it high PORTL |= B00000100 and delay (1000) and to make it low PORTL &= B11111011 and delay (1000), but my question is how we can get the "PORTL &= B11111011" ? isnt it just flip the number (high) which might be PORTL|=B11111011? but then why is it "PORTL &= B11111011"?

Why we should use the AND not or?

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