19 Mar
2003
19 Mar
'03
5:17 a.m.
And I've found this ..
B1 1+-v-+16 Vcc
B2 2| |15 A2
B3 3| |14 A1
A3 4| |13 A0 S=A+B+Cn
Cn 5| |12 B0 Cn+4=OUT
Cn+4 6| |11 S0
S2 7| |10 S1
GND 8+---+9 S3
Lee.
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