Example 2
BCD-to-Seven-Segment Decoder
7-Segment display
(a) Segment designation
(b) Numeric designation for display
32
Design Example 2 Seven-Segment Decoder
\begin{tabular}{|c|c|}
\hline w x y z & abcdefg \\
\hline 00000 & 1111110 \\
\hline & 0110000 \\
\hline 0010 & 1101101 \\
\hline & 1111001 \\
\hline 100 & 0110011 \\
\hline 0101 & 1011011 \\
\hline 0 & 1011111 \\
\hline 01111 & 1110000 \\
\hline 000 & 1111111 \\
\hline 1001 & 1111011 \\
\hline 1010 & \\
\hline 011 & (x)xxuxu \\
\hline 1100 & (x)xxuxu \\
\hline 1101 & (x)XXXXX \\
\hline 110 & (x)xx<x \\
\hline 1111 & \\
\hline
\end{tabular}
\( a=w+y+x z+x^{\prime} z^{\prime} \)
Finish for b,c,d,e,f,g and come to class
a
d
b \( = \)
\( c= \)
\( d=\ldots \)
33