What is a Digital Alarm Clock:

A digital clock is a one kind of clock used to display the time in the form of digital includes  symbols or numerals. These clocks are frequently connected with electronic drives, but the term digital  refers only to the LCD display, not to the drive mechanism. The digital clock circuit uses the 50-60hz oscillation of AC power.Most digital alarm clocks display the hour of the day in the form of 12 hours or 24 hours with an indication of AM or PM. Most digital alarm clocks use LCD display, seven segment display or VFD.

Digital clocks run with mains electricity and must be reset the time when the power is off. Most of the clocks don’t have a battery back up, so this will cause to fail to generate an alarm sound at the fixed time. To overcome this problem, many digital alarm clocks are available to operate with a battery during the power outage. Commercial digital clocks are generally more consistent than consumer clocks. Because, these clocks give backup to maintain the time using multi decade battery during power off.


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