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Alarm Clock
AuthorNirjonmela
Creation date
The primary function of these clocks is to awaken people from their night's sleep or short naps.
An alarm clock is a clock that is designed to alert an individual or group of individuals at a specified time. The primary function of these clocks is to awaken people from their night's sleep or short naps; they are sometimes used for other reminders as well. Most use sound; some use light or vibration.
