A digital-to-analog converter (DAC) is an electronic device that transforms digital signals, which are composed of binary data (0s and 1s), into analog signals. These analog signals can be used to drive speakers, display images, or control other devices that require continuous signals. DACs are essential in various applications, including audio playback, video rendering, and telecommunications. DACs work by interpreting the digital input and producing a corresponding voltage or current that represents the original signal. The quality of a DAC can significantly affect the performance of audio systems, impacting sound clarity and fidelity. Common types of DACs include pulse-code modulation (PCM) and delta-sigma converters.