Which of the following is correct for Digital Circuits?

Digital circuits process information using discrete binary values (0 and 1), not analog or continuous signals. They use voltage levels to represent these binary states, typically high (e.g., 5V) and low (e.g., 0V). This allows for reliable and fast signal processing, making them suitable for high-speed operations. Unlike analog circuits, digital circuits are less susceptible to noise and can be easily designed using logic gates. Therefore, the statements in options A, B, and C are incorrect because they misrepresent the nature of digital circuits.