First slide

Logic gates

Question

The circuit diagram shown here corresponds to the logic gate,

Moderate

A

NAND
B

NOR
C

AND
D

OR

Solution

Case-1 : A = 0, B = 0
LED will glow
$∴ Y = 11$
Case-2 : A = 0, B = 1
No current will through LED
$∴ Y = 0$
Case-3 : A = 1, B = 0
Again no current will through LED
$∴ Y = 0$
Case-4 : A = 1, B = 1
Again Y = 0
A B Y
0 0 1
0 1 0
1 0 0
1 1 0
NOR gate

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