Write the table of 2-4-2-1 code and show that it is a self complementi

Write the table of 2-4-2-1 code and show that it is a self complementing code.

Answer»

1's complement of 1100(6₁₀) = 0011 = 3₁₀
= 9's complement of 6
∴ 2421 code is self complementing code