The clock began in ancient Egyptian times, where they used water clocks to measure time.
In the 15th century, the first mechanical clock was created in Europe and called a bell clock.
Hours have been used for thousands of years as a time measuring device, and is still used today in several applications.
In the 16th century, the first bag clock was made by a German mechanic named Peter Henlein.
In the 17th century, large bells were made for churches and other important buildings throughout Europe.
At the beginning of the 18th century, the pocket clock became very popular among the rich and famous people, and was often decorated with valuable gems and metals.
In the 19th century, the discovery of a steam engine allows mass clock production and makes an affordable watch for ordinary people.
In 1949, the first atomic clock was made, which measured time very accurately using the vibration of cesium atoms.
In 1969, the first digital clock was made, which replaced traditional needles with digital numbers.
Today, smart clocks have become popular, which allows users to access information, check emails, and even make phone calls through their hours.
