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- 74xx00 +-v--+
: j. h; a1 y8 N9 ?! b - CPU R/W -+-|1 14|--- +5V) t) Q% l, M+ c9 Q: Y
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+ z2 E e2 r* \7 @$ U - +-|5 10|-+
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* V$ F+ A* X6 g0 C4 i" B" ] - NC |6 9|--- CPU PHI2* n& x& g! j" M
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3 l5 f- A) _+ \% h - GND ---|7 8|--- 74xx161 CK
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