COMPUTER SCIENCE AND ENGINEERING
DIGITAL LOGIC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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x=A+B
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x=A.B
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x=Ā
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None of the above
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Detailed explanation-1: -AND – GATE Logic expression: Input variable are A, B and the output variable is Y, then the logic expression for OR gate is Y = A.B.
Detailed explanation-2: -A logic gate that is defined to execute the logical multiplication of binary input is known as the AND Gate.
Detailed explanation-3: -The crucial difference between AND gate and OR gate is that AND gate performs multiplication of the digital inputs. As against the OR logic gate is used to execute the addition of the digital inputs.
Detailed explanation-4: -Q = ( A + B ) (A + B) = (A’ + B’) (A + B) This equation looks like it can be implemented using NOR Gates. We need totally five NOR gates (two for inverting A and B, one for NOR of A and B, one for NOR of A’ and B’ and the final one to obtain the above equation).