A digital voltmeter is an electronic device used to measure the voltage in an electrical circuit. Unlike analog voltmeters that use a pointer on a scale to indicate voltage, digital voltmeters display numerical values directly on a digital screen. These voltmeters convert the analog voltage input into a digital signal, which is then processed and displayed as a numerical value. They offer high accuracy, better resolution, and often come with additional features like auto-ranging (automatically selecting the appropriate measurement range) and the ability to measure different types of voltage (AC or DC).