Digital clocks are timekeeping devices that display the time using numbers instead of hands. They typically show hours and minutes, and some models also include seconds, dates, and alarms. Digital clocks can be powered by batteries or electricity and are often 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. Some advanced models may also connect to other devices, such as smartphones or smart home systems, for added functionality.