Digital Logic - Old Questions

Combinational circuit is a circuit which consist of logic gates whose outputs at any instant of time are determined directly from the present combination of inputs without regard to previous input. The combinational circuit do not use any memory.

• There will be combination of input variable for inputs.

• A combinational circuit can have number of inputs and number of outputs.

• For e.g. adders, subtractors, decoders, encoders etc.

  
  

Fig: Block diagram of combinational circuit