What are discrete voltage levels?

Discrete voltage levels refer to specific, distinct values of voltage that a system can represent or use, as opposed to a continuous range of voltages. In digital electronics, these levels typically correspond to binary states, such as high (1) and low (0), with defined thresholds that determine what constitutes a high or low signal. Discrete voltage levels are essential for reliable data transmission and processing in digital circuits, as they minimize ambiguity and improve noise immunity.