Question

What data inputs to a 1 of 16 decoder cause output 13 to be LOW?

Answer 1

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.