You are given two circuit as shown in Fig. and . Show that circuit acts as OR gate while the circuit acts as AND gate
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In Fig . , the output of NOR gate is made input for NOT gate. Then Boolean expression is `y=bar(bar(A+B))=A+B` Hence OR gate is formed. In Fig. , the output of two NOT gate is made input for NOR gate. The Boolean expression is `y=bar(barA+barB)=bar(barA).bar(barB)=A.B` Hence AND gate is formed.
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