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IC 7402 is different from the other type of IC like 7404,7408,7432 and 7400 when it is connected to have an output desired... if you noticed all i mentioned ic is connected from left to the right.

input pin 1 and 2, output pin 3

input pin 4 and 5, output pin 6

input pin 13 and 12, output pin 11

input pin 10 and 9, output pin 8

while in nor gate, to have the desired output it must be connected from right to left...

input pin 2 and 3, output pin 1

input pin 5 and 6, output pin 4

input pin 8 and 9, output pin 10

input pin 11 and 12, output pin 13

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14y ago
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12y ago

IC7402 is NOR GATE IC NOR Gate is universal gate....and hence any logaical gate can be derived through univarsal gate

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Q: How IC 7402 can be connected to use NOR gate?
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