A digital clock is a timekeeping device that displays the time using numerical digits instead of hands on a dial, essentially showing the time in a digital format, commonly seen on phones, computers, and wall clocks, where the hours and minutes are presented as numbers separated by a colon (e.g., 12:30) and often utilizing an LCD or LED screen to display the time; it typically relies on a quartz crystal to maintain precise timekeeping by counting its oscillations at a very high frequency. 

Key points about digital clocks:

• Display method:
  Uses numerals to show the time, unlike analog clocks which use hands on a dial. 

• Quartz crystal technology:
  Most digital clocks use a quartz crystal that oscillates at a very precise frequency to accurately measure time. 

• Digital display:
  The time is displayed on a screen using LED (light-emitting diode) or LCD (liquid crystal display) technology, often with a seven-segment display for each digit. 

• Features:
  Many digital clocks include additional features like alarms, stopwatches, calendars, and sometimes even temperature displays. 

How a digital clock works:

• Quartz crystal oscillation:
  The quartz crystal inside the clock vibrates at a very consistent frequency (typically 32,768 Hz). 

• Counting oscillations:
  An electronic circuit counts these oscillations and divides them into seconds, minutes, and hours. 

• Display update:
  The calculated time is then sent to the display unit which illuminates the appropriate segments on the LCD or LED screen to show the time. 

A digital clock is an electronic time-keeping device that displays the time using numeric digits instead of hands. It typically consists of a display screen, often LED or LCD, and a mechanism to update the time. Digital clocks can be found in various forms, including wristwatches, wall clocks, and mobile devices. They often feature additional functions such as alarms, timers, and date displays. Digital clocks are widely used in modern life, providing a convenient and precise way to tell the time. Some digital clocks also offer advanced features like atomic timekeeping and synchronization with internet time servers.

A digital clock is a timekeeping device that displays the time using numeric digits on a screen, typically in either a 12-hour or 24-hour format, instead of using hands on a dial like an analog clock; it uses an electronic circuit to count the oscillations of a quartz crystal to accurately keep time and then displays the calculated time on an LCD or LED screen, usually with a seven-segment display to show the numbers clearly. 

Key points about digital clocks:

• How they work:
  A small quartz crystal inside the clock vibrates at a very precise frequency (usually 32,768 Hz), and an electronic circuit counts these vibrations to calculate seconds, minutes, and hours. 

• Display:
  Most digital clocks use a liquid crystal display (LCD) or light-emitting diode (LED) screen to show the time as numbers. 

• Seven-segment display:
  The numbers on a digital clock are often displayed using a "seven-segment display," where each digit is made up of seven individual segments that can be lit up to form the number. 

• Time formats:
  Digital clocks can display time in either a 12-hour format (with AM/PM indication) or a 24-hour format. 

• Features:
  Many digital clocks include additional features like alarms, stopwatches, calendars, and countdown timers. 

Advantages of digital clocks:

• Easy to read: The clear numeric display makes it simple to tell the time at a glance, especially compared to an analog clock.

• Accuracy: Quartz crystal technology ensures high precision timekeeping.

• Versatility: Digital clocks can be integrated into a wide range of devices like phones, computers, microwaves, and watches.

The number before the colon(:) is the hour.

And the number after the colon(:) is the minute.