COMPUTER SCIENCE AND ENGINEERING
DIGITAL LOGIC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A.B
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A’B+AB’
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A+B
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A’B’
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Detailed explanation-1: -The Boolean expression of the OR gate is Y = A + B, read as Y equals A ‘OR’ B.
Detailed explanation-2: -Ā + A should always be equal to 1.
Detailed explanation-3: -An AND gate is a logic circuit that performs the AND operation on the circuit’s inputs. An AND gate output will be 1 only for the case when all inputs are 1; for all other cases the output will be 0. The expression x=A•B is read as “x equals A AND B.”
Detailed explanation-4: -Here, A+AB=A(1+B)=A since in Boolean algebra, 1+B=1.
Detailed explanation-5: -A Boolean expression is a logical statement that is either TRUE or FALSE . Boolean expressions can compare data of any type as long as both parts of the expression have the same basic data type. You can test data to see if it is equal to, greater than, or less than other data.