Digital Logic - Old Questions
7. What do you mean by Universal gate? Realize the following logic gates using NOR gates.
(a) OR gate (b) AND gate
5 marks
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Asked in 2067
An universal gate is a gate which can implement any Boolean function without need to use any other gate type. The NAND and NOR gates are universal gates.
NOR gate as a Universal Gate
To prove that any Boolean function can be implemented using only NOR gates, we will show that the AND, OR, and NOT operations can be performed using only these
Thus, the NOR gate is a universal gate since it can implement the AND, OR and NOT functions.