Analog refers to a method of representing information using continuous signals or physical quantities. Unlike digital systems, which use discrete values (like 0s and 1s), analog systems can vary smoothly over a range. Common examples of analog devices include vinyl records, analog clocks, and thermometers that use liquid to measure temperature. In electronics, analog signals can represent sound, light, or other forms of data. For instance, in audio equipment, analog signals are used to capture and reproduce sound waves. While digital technology has become more prevalent, analog systems are still valued for their warmth and authenticity in various applications, such as music and photography.