Answer:
A₃=1 A₂=1 A₁=0 A₀=1 .
Explanation:
Suppose the inputs to the decoder are A₃,A₂, A₁,A₀ with A₃ MSB(most significant bit) and A₀ LSB(Least Significant Bit) and assuming that the output of the decoder is inverted.So for the output 13 to be low the input should be A₃=1 A₂=1 A₁=0 A₀=1 with the Enable on.
For this decoder there will be 16 outputs form O₀ to O₁₅ and O₀ will be low when the input is 0000 and O₁₅ will be low when the input is 1111.
