In an exclusive OR (XOR) gate, the output is produced when the inputs are what?

In an exclusive OR (XOR) gate, the output is produced when the inputs are what?

• A. Inputs are the same
• B. One input must be high
• C. Inputs are different
• D. Both inputs must be high

Answer: (C)

XOR outputs a high signal only when the two inputs are different. In other words, one input is high and the other is low. If both inputs are low or both are high, the output stays low. For a two-input XOR, the output is high for the 0/1 and 1/0 cases, and low for 0/0 and 1/1. This exclusive behavior is exactly why the output occurs when the inputs differ.

XOR outputs a high signal only when the two inputs are different. In other words, one input is high and the other is low. If both inputs are low or both are high, the output stays low. For a two-input XOR, the output is high for the 0/1 and 1/0 cases, and low for 0/0 and 1/1. This exclusive behavior is exactly why the output occurs when the inputs differ.