using pic Microcontroller

2-a) Three generators G1, G2, and G3 all are connected on a single bus bar to PORTB (RB), RB1, and RB2) respectively. G1, G2, and G3 each have a power 150KW. If we use a particular analog sensor with features its range 0450KW with voltage 0V5V. Derive the program for this problem to prevent the network from breakdown [if the load is increased or decreased the generators will be on or off to satisfy the required load]. The process begins when the start switch is pressed, this firstly causes G1 only to turn on. Stop switch turn off all generators. (6 marks)