Digital potentiometer is a type of electronic component that allows the resistance value of a potentiometer to be controlled digitally, typically by a microcontroller or other digital device. It is essentially a digital version of a traditional analog potentiometer. Digital potentiometers are widely used in various types of electronic systems, including audio systems, power supplies, and automated controls.

A digital potentiometer typically has three terminals: a common terminal, and two variable terminals. The resistance value between the variable terminals can be adjusted by sending digital commands to the potentiometer, such as a digital word that corresponds to a particular resistance value. This allows for precise control of the resistance value and eliminates the need for manual adjustment of the potentiometer's wiper.

There are several different types of digital potentiometers. One type, known as a variable resistor or Rheostat, uses a track of resistive material such as carbon, and a wiper that slides along the track to adjust the resistance. Another type, known as a digital potentiometer IC, uses a network of resistors and switching elements to adjust the resistance and is integrated into a small chip.

Digital potentiometers offer a number of advantages over traditional analog potentiometers. They can be controlled and programmed remotely, they can be integrated into digital systems, and they are more precise and accurate than analog potentiometers. They also require less physical space, and they do not wear out as quickly as mechanical potentiometers.