More than one active input to an encoder will often produce an erroneous output. This problem may be partially overcome by the use of:

A) a priority encoder to ensure that when more than one input is active the output will correspond to the highest-numbered input.
B) an open-collector NAND gate whose inputs are connected to the decoder's outputs.
C) a priority encoder to ensure that when more than one input is active the output will correspond to the lowest-numbered input.
D) an additional encoder whose inputs are cascaded to the original decoder's outputs.


A

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