Write a program (main only) to control the fluid level in a tank using a digital schmitt trigger type program for the Pic 16F877 .the tank has already has a level sensor that display the present level of the fluid on a two numerical 7 segement led display.the display represents the fluid level as a % of the tank capacity. A) when the level reaches 90% of full capacity a 120 V a.c filling pump must be shut off. B) when the levl drops to 60%.the pump must stop.