2 to 4 DECODER

DECODER ARE THE COMBINATIONAL CIRCUIT WHICH HAS ''N'' INPUT AND 2^N OUTPUT .IN THIS CIRCUIT THERE ARE 2 INPUTS AND 4 OUTPUTS.WHEN THE ENABLE IS SET TO 0, WITHOUT CONSIDERING INPUT ,OUTPUT SHOWS ZERO,HERE THE INPUT ACT HAS DON'T CARE.WHEN THE ENABLE IS SET TO 1,THE OUTPUT COMES ACCORDING TO THE INPUT GIVEN.