What would be your opinion on this? Would you opt for a fully automated or partially automated version of your car? Think about it and I think you will agree with me. A master clock is a hardware device that obtains accurate time from a hardware reference and synchronizes slave clocks and time displays. The slave clocks rely on the master clock to display the correct time.
Once set, traditional, unsynchronized clocks drift away from the correct time at differing rates. After a relatively short amount of time, they can all display very different times. Correcting individual clocks can be a very time-consuming process which needs to be carried out at regular intervals.