COMPUTER SCIENCE AND ENGINEERING
DIGITAL LOGIC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Inversion followed by AND gates
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AND followed by an Inverter gate
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AND followed by an OR gate
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None of these
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Detailed explanation-1: -Q4: NAND gate means. Inversion followed by AND gates. AND gates followed by an inverter.
Detailed explanation-2: -NAND gate as an inverter: A NAND gate can be used as an inverter by connecting all the input terminals together. It also acts as a controlled inverter as shown in the figure. Bubbled NAND gate: It is equivalent to OR gate.
Detailed explanation-3: -An OR gate is equivalent to an inverted-input NAND gate.
Detailed explanation-4: -We can say that if Ā = 1 = B, both A and B are 1, and the output is 1. Therefore, the NAND gate can perform the OR function by inverting the inputs. The output is the exact inverse of the AND gate for all possible input combinations in the NAND gate.
Detailed explanation-5: -The NAND gate operates as an AND gate followed by a NOT gate. It acts in the manner of the logical operation “and” followed by negation. The output is “false” if both inputs are “true.” Otherwise, the output is “true."