Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
Which of the following logic gates is a universal gate?
A
OR
B
NOT
C
AND
D
NAND
Answer
NAND
Explanation
Solution
The NAND gate and the NOR gate can be said to be universal gates since combinations of them can be used to accomplish any of the basic operations and can thus, produce and inverter, an OR gate or an AND gate. The non-inverting gates do not have this versatility since they can't produce an invert. The basic symbol and truth table of NAND gate are shown. 