A digital-to-analog converter (DAC) is a device that converts discrete-time digital signals into continuous signals. In essence, it takes digital data and transforms it into an analog signal that can be used by various electronic devices, such as amplifiers or audio equipment. This process is the inverse of what occurs in an Analog-to-Digital Converter (ADC), which converts analog signals to digital ones. The quality and accuracy of a DAC depend on its resolution and sampling rate, which define how precisely it can represent the original signal.