Question

How can invert bubbles at the input of an AND gate be used to convert it into a NOR function?

a) By removing the bubbles
b) By adding more bubbles
c) By using an XOR gate
d) By using an OR gate

Answer 1

In digital electronics, removing input invert bubbles of an AND gate with an existing output invert bubble converts it into a NOR gate, since it changes the NAND behavior to NOR.

Step-by-step explanation:

The question asks how invert bubbles at the input of an AND gate can be used to convert it into a NOR function. The correct answer is a) By removing the bubbles. In digital electronics, invert bubbles at the input of a logic gate represent an inversion (NOT operation) before the primary function of the gate. An AND gate with inversion bubbles on both inputs is essentially a NAND gate. To convert this into a NOR gate, which outputs a high signal only when all inputs are low, you would remove the inversion bubbles at the input, and then add an inversion bubble at the output (to invert the NAND into a NOR). Alternatively, if there's an inversion bubble on the output of the AND gate already, then by simply removing the input bubbles you'd get a NOR function