How many inputs does the XOR gate have?

The XOR (exclusive OR) gate is a digital logic gate that outputs true or 1 only when the number of true inputs is odd. Specifically, the most common implementation of the XOR gate uses two inputs.

When both inputs are equal (either both are true or both are false), the output will be false or 0. However, when one input is true and the other is false, the output becomes true or 1. The two-input configuration of the XOR gate makes it useful in various applications, such as in arithmetic operations, error detection, and digital circuits where a condition is met when inputs differ.

While higher-input XOR gates can exist theoretically, they are less common and tend to be implemented in more complex logical structures. In most basic digital circuits, the two-input XOR gate is standard. Therefore, the correct answer is that the XOR gate primarily has two inputs.