Who Invented the Alarm Clock in Ancient Times?

Do you know who invented the alarm clock in ancient times? Alarm clocks have been around for thousands of years, and they have a fascinating history. In this article, we will explore the origins of the alarm clock and how it has evolved over time.

The First Alarm Clocks

The earliest alarm clocks were invented in ancient Greece and Rome. These alarm clocks were water clocks that used dripping water to mark the passage of time.

The Greeks called these clocks “clepsydras,” which means “water thief” in Greek. They were often used in courts to ensure that trials did not go on for too long.

The Chinese Alarm Clock

In China, during the Song Dynasty (960-1279), a monk named Yi Xing created a mechanical clock that used a drum to sound an alarm. This was the first mechanical alarm clock ever made. It was large and expensive, so it was only used by the wealthy elite.

Early European Alarm Clocks

During the 15th century, Europeans began to experiment with their own versions of mechanical alarm clocks. These early clocks were often intricate and ornate, featuring moving parts and musical chimes.

The Modern Alarm Clock

In the early 1900s, electric alarm clocks began to appear on the market. These new clocks were more accurate than their mechanical counterparts, and they were also much easier to use.

Digital Alarm Clocks

In the 1970s, digital technology revolutionized the world of alarm clocks. Digital clocks could display time in numbers rather than using hands on a dial. This made them even easier to read and set.

Smartphone Alarm Clocks

Today, many people use their smartphones as their primary alarm clock. With apps like Apple’s “Clock” or Google’s “Clock,” users can set multiple alarms, choose from a variety of sounds and tones, and even customize their snooze settings.


The alarm clock has come a long way since its humble beginnings in ancient Greece. From water clocks to digital displays, the alarm clock has evolved with technology.

Today, we have more options than ever before when it comes to waking up on time. Whether you prefer an old-fashioned ticking clock or a high-tech smartphone app, there’s an alarm clock out there that’s perfect for you.