In Digital electronics digital gates are two type, Combinational circuit(gate), Sequential circuit(gate). In our day to day life all the electrics or electronics equipment are dependent on this two types of circuit(gate).

Combinational circuit | digital logic gate

When Boolean expressions (a.b.c + a.b.c| +a|.b|.c)  are represented by logic gate then those logic gates are called Logic circuit.
Logic circuits are two types 1. Computational circuit , 2. Sequential circuit.
Computational circuit :  Which circuit takes a set of input and  makes those input as a signal that is called computational circuit.

Different between Computational circuit and sequential circuit.
logic circuit gate
Combinational Vs Sequential circuit 

Designing Step of a combinational circuits :

  1. Problem definition
  2. The number of available input variables and required output.
  3. Assign the letter symbol to the input and output.
  4. Make a truth table to define the relationship between input and output.
  5. Get simplified Boolean function for each output obtained.
  6. Finally draw the logic diagram.


Lets see the Problem to know the step :
Problem :  Design a combinational circuit with two inputs that produce high output when gives odd high input.
Combinational logic circuit
Design Step of Combinational Circuit
Logic circuit gate
Design Step of Combinational Circuit
digital logic gate
Design Step of Combinational Circuit

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