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LOGIC DIAGRAM AND TRUTH TABLES (one register stage)
HCC/HCF4006B
TRUTH TABLE FOR OUTPUT FROM
PIN 2
D1 + 4
CL∆
D1 + 4’
0
–/–
0
1
–/–
1
X
–\–
NC
TRUTH TABLE FOR SHIFT REGISTER
STAGE
D
0
1
X
1 = HIGH
0 = LOW
NC = NO CHANGE
CL∆
D+1
–\–
0
–\–
1
–/–
NC
X = DON’T CARE
∆ = LEVEL CHANGE
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