|Combinational Logic||Sequential Logic|
|Combinational logic is used to implement basic Boolean operations||Sequential logic is used to create memory elements.|
|Combinational logic uses only the present inputs to determine the output.||Sequential logic uses both present inputs as well as previous outputs to determine the current input.|
|Combinational logic,does not require feedbacks.||Sequential logic uses the feedbacks from the output to inputs.|
|Combinational logic circuits do not have the ability to retain data.||Sequential Logic Circuits have a memory.|
|Combinational logic circuits are built with logic gates as the elementary device.||Sequential logic circuits have Flip-Flops as the elementary building unit.|
|Combinational logic does not have clocks.||Most sequential circuits are clocked|
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