The foliowing code should switch a buzzer on and off at a frequency of $4Hz.$ Complete the missing parts? byte $"$ptr$\_$PORTD: byte $"$ptr$\_$DDRD: unsigned long $Tp=0$; unsigned long $Tc$ : void setup$()$ ptr$\_$PORTD $=02B$ ptr$\_$DDRD $=02$A $"$ptr$\_$DDRD $="$ptr$\_$DDRD $|$ B$00010000$; jvoid loop $()($

tye Tet posio:

unamaa kasa Ha $=z$

whighad diana Fac:

whithehamit

vitition $N$

teia $$ P$.$

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