Clocks are what we use to tell the time wherever it’s 24 hour time or 12 hour time. Clocks can be analog or digital but there use to be different types of clocks in history.
Clocks were first introduced as clocks called ‘Pendulum clocks’, which were when the hand tics up and down for a minute or 2. In early 1700’s, Christiaan Huygens got credited for the (Pendulum clock to regulate the time telling device). Over time, researchers have just built their research up and put together the first analog clock. The digital clock was put together by code from the computer and set accurately.