Develop a logic circuit with four input variables that will only produce a binary '1' output when exactly three input variables are binary 1s. Q.3: The input waveforms in Figure-2 are applied to a 2-bit adder. Determine the waveforms for the sum and the output carry in relation to the inputs by constructing a timing diagram. Only draw output waves form from 1 to 8. A1 A2 B1 B2 Cin 1 2 3 4 5 6 7 8 Fig-2