question_answer

Which of the following logic gates is a universal gate?

A) \[OR\]                                  

B) \[NOT\]

C) \[AND\]                              

D)  \[NAND\]

Correct Answer: D

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 an inverter, an \[OR\] gate or an \[AND\] gate. The non-inverting gates do not have the versatility since they can't produce an invert. Note: The basic symbol and truth table of \[NAND\] gate are shown