Combinational Logic Circuits

Digital signals are processed by the digital system which can be built with various logic gates. These logic circuits are made of various logic gates , by connecting them in certain combinations , in order to produce the required output.Digital logic circuits are mainly classified into two types , sequential logic circuits and combinational logic circuits. This article gives a brief idea about the combinational logic circuits. A combinational logic circuit is one in which the present state of the combination of the logic inputs decides the output . The term combination logic means combining of two or more logic gates to form a required function where the output at a given time depends only on the input. The logic gates are the fundamental building blocks of a combinational circuit. By using the combination of logic gates more complex combinational circuits can be implemented such as multiplexers and de-multiplexers, comparators, adders and subtractors, etc.