Use of buffer inverter Gates
we connected two inverter gates together so that the output of one fed into the input of another, the two inversion functions would “cancel” each other out so that there would be no inversion from input to final output.
The question is that what is the deference/use of one buffer gate and two buffer inverter gates with the same output?
While this may seem like a pointless thing to do, actually it has a practical application. Remember that the gates circuits are electronic circuit signal amplifiers, regardless of what logic function they may perform.
A weak signal source (One that is not capable of sourcing or sinking very much current to a load) will be boosted by means of two inverters like the pair shown in the previous illustration.
The logic level is unchanged, but the full current sourcing or sinking capabilities of the final inverter are available to drive a load resistance.
