examples of combinational and sequential circuits

So as a result there is a present inputs and the outputs and also the memory element which has already stored the output from the previous inputs. Let’s say time comes and it’s time to use the values stored in this memory and these values will be used as the inputs. This memory will keep the output till the time the it will be going to be used again. You can see inputs and outputs on the diagram and also at the same time there is a storing process happening that particular output on outputs on the memory block. The present state and present inputs will define output and new state. The information stored in the sequential circuit represents the present state. That means past inputs are past output and the present state is nothing but past outputs. Here the present state depends upon past inputs only. In a sequential circuit, the present output depends on the present input as well as the present state(past output).

It can have n number of inputs and m number of outputsĪ sequential circuit is generally a combinational circuit with memory.It doesn’t depend upon any previous input or output.Output is dependent upon the combination of input variables.So generally this is a logic circuit that has different logic gates integrated into its circuit. As the name indicates the output of a combinational circuit will depend only on combinational input variables given. The combinational logic circuit is a circuit whose output will depend only on the input variables. These two circuits are very important and broad categories of circuits defined in digital electronics where the combinational circuits are independent of time and the sequential circuits are dependent on time. This post answers the question “What is sequential and combinational logic?”.

Examples of combinational and sequential circuits