# Combinational logic vs sequential logic

Combinational and Sequential circuits are the most essential concepts to be understood in digital electronics. Combinational logic sometimes also referred to as time-independent logic is a type of digital logic which is implemented by Boolean circuits, where the output is a pure function of the present input only. Sequential logic is a type of logic circuit whose output depends not only on the present value of its input signals but on the sequence of past inputs.

Hey Gautam, To design sequential circuit also we use gates. But in case of sequential circuit we use feed back gates memory elements along with combinational logic. So that it can work like a latch or flip-flop. If you still have doubt, let us know. We would explain it in a detailed way.

In sequential circuit block diagram ,it is said that some outputs are again feedbacked to inputs,after storing them in memory. But,where is combinational logic vs sequential logic memory in sr latch.

In sr latch ,it is seen that the output is directly taken to the inputs,and their is no memory. Memory in the block diagram shows a delay for which the previous output can be hold and can be used as the feedback input in the present clock cycle.

So, there is no explicit memory block in the SR latch. Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Output is a function of clock, present inputs and the previous states of the system. Do not have the ability to store data state.

Have memory to store the present states that is sent as control input enable for the next operation. It does not require any feedback. It simply outputs the input according to the logic designed. It involves feedback from output to input that is stored in the memory for the next operation.

Used mainly for Arithmetic and Boolean operations. Used for storing data and hence used in RAM. Logic gates are the elementary building blocks. Flip flops binary storage device are the elementary building unit. Independent of clock and hence does not require triggering combinational logic vs sequential logic operate. Clocked Triggered for operation with electronic pulses.

Dear Sagnik, Memory in the block diagram shows a delay for which the previous output can be hold and can be used as the feedback input in the present **combinational logic vs sequential logic** cycle. Leave a Reply Cancel reply Combinational logic vs sequential logic email address will not be published. Sorry, your blog cannot share posts by email.