The truth table for a logic gate is: | ||||||||||||||||||
|
A) NAND gate
B) XOR gate
C) NOR gate
D) OR gate
Correct Answer: A
Solution :
The given truth table is for NAND gate. The output for NAND gate is 1 only when one of its inputs is zero. |
The Boolean expression for NAND gate is |
\[Y=\overline{A\,.\,B}\] |
That is \[\overline{1\,.1}=\bar{1}=0\] |
\[\overline{0\,.1}=\bar{0}=1\] |
\[\overline{1\,.0}=\bar{0}=1\] |
\[\overline{0\,.0}=\bar{0}=1\] |
Note: The symbol for NAND gate can be shown as: |
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