3. Write a PIC program to do the following: continually increment an internal counter and copy it to pins 1(LSB), 2, 6, and 7 (MSB) of an 18- pin PIC18f1220 if the INT1 pin is raised from o to 1, set the counter to binary 1111; -if the INTO pin is raised from 0 to 1, set the counter to binary 0000. Include all necessary initialization. Also include a circuit diagram, showing switches for generating the interrupts and LEDDs for displaying the outputs. 3. Write a PIC program to do the following: continually increment an internal counter and copy it to pins 1(LSB), 2, 6, and 7 (MSB) of an 18- pin PIC18f1220 if the INT1 pin is raised from o to 1, set the counter to binary 1111; -if the INTO pin is raised from 0 to 1, set the counter to binary 0000. Include all necessary initialization. Also include a circuit diagram, showing switches for generating the interrupts and LEDDs for displaying the outputs