PAGER or Beeper, the Technology that Preceded Cell Phones in Brazil
26A pager, also known as a beeper, is a communication device that was popular in the late 20th and early 21st centuries. It received text and/or voice messages via radio signals and was often used by doctors and emergency responders before the rise of smartphones.
How it works:
Pagers received messages sent over a telecommunications network, usually via radio transmissions.
When a message was received, the pager would beep or vibrate to alert the user.
The message was then displayed on the pager's screen, which was usually small and liquid crystal.
Features:
Pagers were small and portable, easily fitting into a shirt pocket.
Some models had built-in keyboards for editing messages.
They were generally used for receiving text messages rather than sending them.
Popularity:
Pagers were very popular before the rise of cell phones, especially among professionals who needed to stay in touch.
With the popularization of cell phones and instant messaging technology, the use of pagers has declined significantly.
However, some pagers are still used in specific contexts, such as in hospitals and emergency services.
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source: Google