1.  

Design a tank filling system consisting of three pumps named A, B, and C, and a level sensor H, which indicates a full tank with H= 1 and an empty tank with H = 0. The system should operate according to the following sequence: a) The system starts with an empty tank and filling should begin with pump A until the tank is full (H-1), and then turn off the pump. b) If the tank is emptied (H-0), filling will now be done with pump B until it's full, and then turn off the pump. c) If the tank is emptied again (H-0), filling should be done with pump C until the tank is full, and then disconnect it. d) If the tank is emptied once more (H=0), filling should be done with pump A, and this pattern repeats, ensuring that the three pumps alternate in operation. Perform all of the above by drawing the state diagram and the corresponding state table. Additionally, carry out the combinational design to obtain the state equations and construct the corresponding schematic diagram. A C B Nivel alto H=1 Nivel bajo H=0 Salida