A clock is a device used to measure and indicate time. It typically displays hours and minutes, and some clocks also show seconds. Clocks can be found in various forms, including wall clocks, digital clocks, and wristwatches. They often use mechanisms like gears or electronic components to keep accurate time.
Clocks have been essential tools throughout history, helping people organize their daily activities. The invention of the mechanical clock in the 14th century marked a significant advancement in timekeeping. Today, many clocks are synchronized with atomic time standards, ensuring they remain precise. Clocks are also often used in conjunction with other devices, such as timers and alarms.