Explain the concept of Universal gate

 A universal gate is a type of logical gate in digital electronics that can be used to construct any other type of logical gate. This means that a set of universal gates can be combined to create any logical function, making them a fundamental building block in digital circuitry. Some common universal gates include NAND, NOR, and XOR gates. By using these gates, complex logic operations can be created, such as adding, subtracting, and shifting binary numbers, or implementing state machines and memory elements.