A digital clock is a timekeeping device that displays the time using numbers instead of hands like an analog clock. It typically shows hours and minutes, and some models also include seconds, date, and alarm functions. Digital clocks can be powered by batteries or electricity and are commonly found in homes, offices, and public places. These clocks use electronic components to keep time accurately, often relying on quartz crystals for precision. Many digital clocks feature backlighting, making them easy to read in the dark. They come in various designs, from simple displays to more advanced models with additional features like alarms and timers.