Question 1

What is an XOR truth table?

Accepted Answer

An XOR (Exclusive OR) truth table shows all possible input combinations and outputs for the XOR logic gate. XOR outputs TRUE (1) only when the inputs are different. For two inputs A and B: when A=0, B=0 → Output=0; A=0, B=1 → Output=1; A=1, B=0 → Output=1; A=1, B=1 → Output=0.

Question 2

How does a 2-input XOR gate work?

Accepted Answer

A 2-input XOR gate outputs 1 when exactly one input is 1 (inputs are different), and outputs 0 when both inputs are the same (both 0 or both 1). The Boolean expression is A ⊕ B or A'B + AB'.

Question 3

What is XOR used for in computers?

Accepted Answer

XOR is essential in computing for: encryption and cryptography, error detection and correction codes, binary addition circuits (half adders), comparing two values to find differences, and toggle operations in programming.

Question 4

What is the difference between XOR and OR?

Accepted Answer

OR outputs TRUE when at least one input is TRUE. XOR (Exclusive OR) outputs TRUE only when exactly one input is TRUE – both inputs being TRUE gives FALSE. This 'exclusive' property makes XOR useful for comparison operations.

XOR Truth Table – Exclusive OR Gate Calculator

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