Q$4$:

$($a$)$ Produce a schematic around the MKR$1000$ board to interface a push button. In

addition, write an Arduino compatible program to change the state of the built$-$

in LED. The state of the built$-$in LED should be ON when the push button is

pressed and otherwise be in the OFF state.

$(15$ marks$)$

$($b$)$ Write an Arduino compatible program of a counter from $0$ to $8$ for the MKR$1000$

board.