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7420.chp
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1979-12-31
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428b
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46 lines
09/12/87
Dual 4-input NAND Gate.
äv R S
74H20
74LS20
74S20
14
1a
1b
NC
1c
1d
1y
GND
2y
2a
2b
NC
2c
2d
Vcc
1
done
14
Input for Gate #1.
' ' ' '
No Connection!
Input for Gate #1.
' ' ' '
Output of Gate #1.
Ground (-).
Output of Gate #2.
Input of Gate #2.
' ' ' '
No Connection!
Input of Gate #2.
' ' ' '
Vcc (+5 volts).