File:2010-07-20_Black_windup_alarm_clock_face.jpg · Wikimedia Commons · See Wikimedia Commons
Đồng hồ báo thức
Also known as alarm
type of clock used to wake up a sleeping person at a certain time
AI overview
An alarm clock is a device that makes a loud noise or sound at a preset time to wake someone up from sleep. It matters because it helps people wake up reliably at a specific time they need to be awake, such as for work or school.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Image
- A digital alarm clock in Glasgow (cropped).jpg
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- Unicode character
- ⏰
- Commons category
- Alarm clocks
Sources (1)
via Wikidata · CC0