Cuckoo,Clocks,NTP,Servers,Accu computer Cuckoo Clocks to NTP Servers: Accuracy in Timekeeping
Gone are those times when the companies and the organisations didn't need a hi-tech system to handle them. Owing to the considerable increase in the business sector and thus, an enormous increase in the complexity of the organisational struc ----------------------------------------------------------Permission is granted for the below article to forward,reprint, distribute, use for ezine, newsletter, website,offer as free bonus or part of a product for sale as longas no changes a
The clockin its form that we recognise today has been around since the middle of the fourteenthcentury. Before then, measuring the passage of time had always been a trickyaffair with the movement of the sun being the only reliable method oftime-telling and the only clocks being crude sundials or water clocks. When thefirst mechanical clocks appeared they were driven by a spring and weight,regulated by a verge-and-foliotescapement, a type of gear system that advances the gear train at regularintervals or 'ticks. Not only does a clock ticking come from these originaldevices but also the familiar clock face was developed. The first clock to use a minute hand appeared in 1475 andinnovations like the pendulum were added making mechanical clocks more and moreaccurate. Shapes, designs and all sorts of bells, alarms and automaton figureswere added to clocks to make them more appealing, the most famous of thesebeing the distinctive cuckoo clock which appeared at the end of the 18thcentury. The next big step in the development of clocks didnt arriveuntil the twentieth century and the development of electronics when it had beennoticed that electrical charges running through crystals, such as quartz, madethe crystals resonate at an accurate rate. These digital clocks could use the traditional clock face ofmechanical clocks but also were able to replace it with a digital display thatshowed the time in numbers. While digital clocks were more accurate than mechanicalclocks and even bigger step towards accuracy was taken with the discovery ofatomic clocks. Atomic clocks work on the principle that the caesium -133atom has an exact resonance each second (somewhere in the region of over 9billion a second). This makes atomic clocks highly accurate; in fact they areeven more accurate than the rotation of the Earth which the national timescaleGMT (Greenwich Meantime) used to determine noon. Another timescale, UTC(universal Coordinated Time)) which is based on GMT but allows for the Earthslowing in its rotation by adding leap seconds has been developed. Computer networks use the time from atomic clocks byreceiving a specialist transmission of the time through radio waves, the GPSnetwork or over the Internet and can synchronise their networks to this UTCtime by utilizing NTP (Network Time Protocol) a protocol specifically designedfor synchronization. Ethernet Clocks can be connected to computer networks thatrun NTP and can display the exact time as told by an atomic clock and displayit on a wall or desk. Other analogue and digital wall clocks can also receive atransmission directly from an absolute time source via radio waves and displayUTC time that way.
Cuckoo,Clocks,NTP,Servers,Accu