NRZ (Non-Return-to-Zero)

Non-Return-to-Zero (NRZ) is a method of signaling used in digital communication to encode data. In NRZ, a voltage level represents binary data: one level (e.g., high) for a 1, and another (e.g., low) for a 0. The key point is that the signal stays at a constant voltage during each bit period, only changing when the data changes. This straightforward approach allows for efficient data transmission, but it can face issues with synchronization if long sequences of identical bits occur. Overall, NRZ provides a simple and effective way to transmit digital information over communication channels.