CIRCUIT DIAGRAM Combinational circuit is a circuit in which we combine the different gates in the circuit, for example encoder, decoder, multiplexer and demultiplexer. Some of the characteristics of combinational circuits are following − The output of combinational circuit at any instant of time, depends only on the levels present at input terminals. The combinational circuit do not use any memory. The previous state of input does not have any effect on the present state of the circuit. A combinational circuit can have an n number of inputs and m number of outputs. BLOCK DIAGRAM TYPES OF COMBINATIONAL CUIRCUIT : Half Adder Full Adder Half Subtractor Full Subtractor Multiplexor De-multiplexor Encoder Decoder N-Bit parallel Adder N-Bit Parallel Subtractor HALF ADDER : Half adder is a combinational logic circuit with two inputs and two outputs. The half adder circuit is designed to add two single bit binary number A and B. It i