What are the most popular types of clocks?
There are many types of clocks which include mechanical clocks, digital clocks, and atomic clocks. Mechanical clocks are the most popular type of clock because they are easy to use and have a long history. Digital clocks use electronics to measure time which makes them more accurate than mechanical clocks. Atomic clocks are the most accurate type of clock because they measure the frequency of atoms to determine the passage of time.