Solve the following questions using MPLAB

Use following two lines in the beginning of code: LIST P=PIC18F452, F=INHX32, N=0, ST=OFF, R=HEX config OSC=HS, OSCS=OFF, WDT=OFF, BORV=45, PWRT=ON, BOR=ON, DEBUG=OFF, LVP=OFF, STVR=OFF

1. Connect 8 LEDs with PORTD of PIC18F452 in Proteus. Send 55H to PORTD and complement the data on PORTD. Use Delay of 1 second between consecutive outputs.

2. Connect two LEDs with RC0 & RC1 and a switch with RB0 of PIC18F452 in Proteus. Implement the following logic in given microcontroller turns on the LED connected with RC0 when SW is turned on and turns on the LED connected with RC1 when SW is turned off.

3. Write down the assembly language program for the following scenario: There are two sensors S1 and S2 are installed at entrance and exit of classroom . Every time a person enters in the classroom, S1 sends high to RB0. Every time a person exits from the classroom, S2 sends high to RB1. Display total number of persons present in classroom at PORTC. Update the Displayed Content on PORTC with some realistic delay using nested loop Approach.

4. Use PIC18F452 Microcontroller to generate a square wave and verify the output in Proteus.