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A clock is a device to measure the passing of time . Early clocks used water dripping into a container with measurements inscribed on the sides . Later when clockwork was invented , a weight on a string or chain was used to pull a system of gears round , with hands or pointers connected to the relevant gears to indicate against a circular scale(face) . Later still a thin steel strip was wound tightly into a coil to replace the weight on a string , allowing more compact clocks . In order to control the speed the gears turned at , an escapement , an oscillating wheel and arm arrangement............or a pendulum , the swing of which is decided by its length and the mass of weight at the free end...............were used .
Since the discovery of electricity , there were numerous new ways to devise clocks . For battery clocks a transistor oscillator generates a pulse at regular intervals which can be used to step the hands on . For mains power , the public grid has a closely controlled frequency which can been used as a time reference...........
Early digital clocks had the numbers marked on gear driven drums which rotated in the same manner as the hands on the original clocks , or cards or tabs were flipped over to change the numbers . Most digital clocks today use a seven segment display . These became popular with the advent of integrated circuits . They are so-called because with just seven bars in the shape of a figure eight , it is possible to generate any number from zero to nine by turning on or off the correct bars . Special integrated circuits(silicon chips) were produced to match these displays .
Some clocks today use liquid crystal displays , the numerals are made up of tiny tiny dots if you look close , complex electronics drive the display , but they still all need a time reference to control them . The most accurate clocks use an atomic source of which there are several in the world . You can make your computer syncronize itself with one of these over the internet . Radio signals are also transmitted in some countries to allow a good time reference ......
Some clocks are battery operated, while older clocks have gears inside.
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How do you turn turn on the clock on base clock radio with iPod dock?
No way
How do you turn on the clock in your game its not working in mine?
you use your d-pad to turn your clock
How do you turn off chime on howard miller mason clock?
You cannot turn off the chimes on this clock
When was Turn Back the Clock - film - created?
Turn Back the Clock - film - was created on 1933-08-25.
Does a tap turn clock wise or anti clock wise?
Counter clockwise to turn it on and clock wise to turn off the tap. The mnemonic device that is often used to help remember this is: "Righty Tighty and Lefty Loosey"
How do you turn your clock on the Nintendo DS?
Go to settings and that's how you set your clock.
How do you stop the alarm clock from waking you up?
Turn off the alarm clock.
What are the release dates for Turn Back the Clock - 1933?
Turn Back the Clock - 1933 was released on: USA: 25 August 1933
Why Turn Back the Clock at 2 AM?
So your clock will match the rest of the world's clocks
Why does the earth turn counter clock wise?
3/4 counter clock wise
Which way does a clock turn?
right clockwise!
How do you turn off clock?
taking out the batteries
