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A digital clock works "electronically" using electricity and digital circuitry. This sets aside the clock that simply has a "digital display" wherein the numbers representing the time are moved by some mechanism, but the clock does not have a "digital" time base. Let's look a bit more closely.
The "heart" of any clock is the mechanism that provides a time base. It can be mechanical, like it was with the first clocks (and many current one), or it can be electrical. With some electrical clocks, the time base is delivered by the AC power source. The frequency of the AC power grid is generally stable over a long period, and a sychronous electric motor that "syncs" with a "good" line voltage will maitain its accuracy over a period of years. But the newest clocks are often digital.
In a digital clock, a digital circuit provides the time base. Some kind of crystal is specifically cut to vibrate at a fixed rate (and with a high degree of accuracy). The vibration of the crystal is electronically monitored, and is maitained by a small voltage that is fed back to the crystal from associated circuits. What comes out of this oscillator is a time base that can be counted and divided down by other electronic components to deliver a "tick" that the display keeps track of.
Some of the newer clocks do all of the electronic "stuff" described, but also have a radio receiver that locks on to a NIST (National Instutute of Science and Technology) time signel. (NIST used to be the National Bureau of Standards, NBS.) NIST broadcasts a "time tick" on a number of different frequencies, and their atomic clocks are among the most accurate in the world. The new "atomic clocks" we can purchase are digital clocks that have receivers that lock on to and sync up with the NIST time signals to maintain accuracy.
What else can I help you with?
What fuse controls the digital clock in a 2011 KIA sorento I replaced a dome light bulb and now my interior lights and digital clock don't work?
The room lp, which is a fuse 10 A, controls the digital clock in a 2011 KIA Sorrento.
How does a soda clock work?
A soda clock works by creating a basic battery. Soda can be combined with other elements to make a digital clock function.
What is the advantage of digital clock?
A digital clock can be looked at and the time will be known immediately. You do not need to know how to tell time with a digital clock.
How does a digital alarm clock work?
You set the time and the screen shows what time it is.. Simple
Which clock is the quietest?
A digital clock is the quietest.
Is there such thing as elctric clock?
digital clock
Where can one purchase a digital clock radio?
You can purchase a digital clock radio online from stores such as Best Buy. Alternatively, you can purchase digital clock radios from retailers such as Amazon.
Is digital clock a digital device?
1. Generally speaking, a digital clock is a digital device. The "heart" of any clock is whatever is used as its time base, and with a digital clock, some kind of digital timing circuit supplies that time base. From there, digital dividers and other circuits count seconds, and other circuits drive a display. 2. Yes by definition it is.
What is a local and foreign literature in digital clock?
can you sent wit me the local and foreign literature of digital clock
Where can I view images of a digital wall clock?
Digital clock is more practical and easy-friendly tool. You can view it at alibaba sites at the showroom, take a look at page of digital wall clock on the site.
Was the digital clock invented after the pendulum clock?
Oh yes. pendulum Clocks rely on mechanics. Digital Clocks rely on Electronics. And we didn't learn to use Electronics until way later than mechanics.
How does a time clock work?
Punch type time clocks used to be the standard type. Employees were issued timecards that the time-clock would stamp or punch with the time when they 'clock in or clock out'. Today time clocks are often digital, and there is even time clock software.
