Alarm clocks overview

Most people have a small beside clock these days with a digital alarm that will wake them up. Watches and even phones also contain alarms to alert you of a specific time.

History of Alarm Clocks

Alarm clocks have been existed for around four hundred years. The earliest alarm clocks used bells that were stuck by weights to make the chime. Later this form of alarm clock was replaced by digital alarm clocks. They use speaker to create a noise at a set time. The modern versions are connected to the atomic clock network, so they will always be set to the latest time.

Where to get them

Simple alarm clocks can be found cheaply at places like Walmart or Target. Alarm clocks that set the time can be found for under twenty dollars.

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