Task 2: BCD DetectorDesign and build a circuit in which the input is 4 bits and the output indicates if the input is an invalidBCD number (specifically, 8421 BCD):• Set (= '1') for invalid BCD• Reset (= '0') for valid BCDIn report:• Describe the problem• All of these foundational components of the design:? Variable definition? Truth table? Karnaugh Map that identifies simplest SOP equation (hint: not all input bits are needed!)? Logic circuit? Chip schematic circuit (remember that we only have 2