Digital clocks display time digitally using numerical digits rather than hands. They originated from the first digital pocket watch invented in 1883 and the first digital alarm clock patented in 1956. Digital clocks use seven segment displays to show numbers and are widely used in devices like clocks, meters, and electronics to display time and other numerical information. They are commonly used in homes, workplaces, schools, hospitals and other settings due to their accuracy, ease of use and functionality. Future plans for digital clocks include adding additional features like weather updates, alarms, and temperature displays.