A clock is used to indicate or keep time. The clock is one of the oldest human inventions and in the 15th and 16th century making clocks flourished. Astonishingly people back a few hundred years told what time it is…just by looking at the sun, its simple but it worked. Clocks come in different shapes and sizes, there analog clocks or digital and we all use them every day. It helps a lot, so we can keep a schedule going.