1. Four tanks at a chemical plant contain different liquids being heated. Liquid -level sensors are being used to detect whenever the level in tank A or tank B rises above a predetermined level. Temperature sensors in tanks C and D detect when the temperature in either of these tanks drops below a prescribed temperature limit.
Assume that the liquid-level sensor output A and B are LOW when the level is satisfactory and HIGH when the level is too HIGH. Also the temperature sensor outputs C and D are LOW when the temperature is satisfactory and HIGH when the temperature is too LOW. Design a logic circuit that will detect whenever the level in the tank A or tank B is too HIGH at the same time that the temperature in either tank C or D is too LOW.