What year did the pager come out?

The pager came out in 1983; in 1983, China's first paging station was opened in Shanghai, and the BP machine entered China; the bp machine is a pager, pager, and is the called user receiver in the wireless paging system , composed of superheterodyne receiver, decoder, control and display; bp machine has two modes of manual tandem and automatic tandem. The corresponding paging station is called manual paging station and automatic paging station. The manual paging station requires manual operation to The information code is sent through the transmitter.

#The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

What year did the pager come out?

In 1983, China's first paging station was opened in Shanghai, and BP machines entered China.

#In the late 1980s, pagers began to appear in China. With the maturity of science and technology and the increase of social demand, paging stations have sprouted up everywhere since 1990. The prosperity of the paging market has made the competition among paging stations increasingly fierce.

In 1993 and 1994, mobile phones began to appear slowly.

Beginning in the second half of 1995, the paging business was gradually defeated by the powerful offensive of mobile phones, and the number of paging users began to stop increasing. The decline began in 1996, with fewer users and a sharp decline in the number of paging stations.

After 2005, pagers gradually faded out of the Chinese scene.

BP machine introduction:

BP machine, namely pager and pager, is the called user receiver in the wireless paging system. It consists of superheterodyne receiver, decoder, control and Display and other components.

The bp machine has two modes: manual tandem and automatic tandem. The corresponding paging stations are called manual paging stations and automatic paging stations. Manual paging stations require manual operation to encode this information and send signals through the transmitter.

In 1993 and 1994, mobile phones began to appear slowly. Beginning in the second half of 1995, the number of paging service users decreased due to the strong offensive of mobile phones. After 2005, pagers gradually faded out of the Chinese stage.

Pager:

The called user receiver in the wireless paging system. It consists of superheterodyne receiver, decoder, control and display.

It selects the useful signal to be received from the paging signal and interference transmitted by the base station, restores it to the original baseband signal for paging the machine, and generates sound (or vibration) and displays numbers (or letters) , Chinese characters) message.

Tandem mode

The BP machine has two modes: manual tandem and automatic tandem. The corresponding paging stations are called manual paging stations and automatic paging stations. Manual paging stations require manual operation to encode this information and send signals through the transmitter. The automatic paging station automatically finds the pager's phone number based on the line number of the incoming call and sends it out at the same time, so that the paged person knows which phone is paging. Frequently used pagers are divided into two categories: digital pagers and Chinese pagers. Digital pagers are compact, low-priced, and practical. Chinese pagers directly display Chinese characters and the information is easy to identify.

Classification

Category According to the different ways in which the pager sends out the paging notification tone and message after receiving the paging machine identification code and message, it can be divided into five categories:

① Audio pager, which emits a sound representing the message;

② Voice pager, emits a voice for 10 seconds;

③ Digital pager, emits a sound (or vibrates) and displays a digital code representing the message ;

④Alphabet-numeric pager, which emits a sound (or vibrates) and displays letters and numeric messages at the same time;

⑤Chinese character pager, emits a sound (or vibrates) and displays Chinese characters and letters at the same time and digital messaging.

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