A program using the led matrix calls the function ledmat$\_$display$\_$column $(0$x$4$C$,2).$ If the value of PORTB is initially $0,$ what will it be after this call? Hint: Have a look at the "drivers$/$ledmat$.$c$"$ and "drivers$/$avr$/$system$.$h$"$ files.

Question $10$ Answer

a$.$

$0$x$62$

b$.$

$0$x$22$

c$.$

$0$x$66$

d$.$

$0$x$26$

e$.$

$0$x$42$