#P4P #PRELIMS
📱PAGERS
- About : A pager is a small, portable device used to receive short messages or alerts, popular before mobile phones became widespread.
- Operation : It operates on dedicated radio frequencies and receives messages from a base station, which can be either numeric (e.g., a phone number) or alphanumeric (text-based).
- Alert Mechanisms : Pagers notify users through a beep, tone, or vibration. Some advanced pagers, known as two-way pagers, allow for sending and receiving messages.
- Types of Pagers : Numeric pagers only display numbers, while alphanumeric pagers can display both letters and numbers.
- Current Use : Pagers are still used in certain professional settings today.
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