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BCD-TO-SEVEN SEGMENT DECODER DRIVER<br />
V+<br />
5V<br />
74LS47<br />
A3<br />
A2<br />
A1<br />
A0<br />
test<br />
RBI<br />
g<br />
f<br />
e<br />
d<br />
c<br />
b<br />
a<br />
RBO<br />
abcdef g .