Analog Circuit Design involves creating electronic circuits that process continuous signals, such as sound, light, and temperature. These circuits use components like resistors, capacitors, and transistors to manipulate electrical signals, enabling devices to perform various functions, from amplifying audio to controlling motors. In contrast to Digital Circuit Design, which deals with discrete signals (0s and 1s), analog circuits can represent a wide range of values. This makes them essential in applications like audio equipment, radio transmitters, and sensors, where smooth and precise signal processing is crucial for performance and accuracy.