Wednesday, September 1, 2010

Q2

Design a combinational circuit with 4 input lines that represent a decimal digit in BCD and 4 output lines that generates the 9's complement of the input digits?

2 comments:

  1. by using the BCD to EXCESS-3 combinational circuit with a NOT gate at the end of each output....complement of EXCESS 3 gives 9's complement of a number........

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  2. when BCD codes are converted into EXCESS-3 code it gives 10's compliment which can be turned into 9's compliment using not gate..

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