Development of the phone

Alexander Graham Bell probably had no idea that he had discovered what would change the world in more ways than you can imagine. Technology that started by phone has led to more discoveries in the field of telecommunications that keep people in touch and connected worldwide.

The Early Days

On March 10, 1876, Alexander Graham Bell sent the first speech with electricity. From that day on, the telephone network changed all aspects of life. Although it did not change the world right away, it put on a communication that would change the future of communication.

The initial lack of confirmation of Mr. Bell's discovery was because the call was a prevalent form of communication and it had been for more than 50 years. This voice over electrical currents that Mr. Bell was pointing to was a new and scary discovery.

By the end of 1870, their performances officially took place on the road to raise awareness and public finance for the project. Mr. Bell introduced the phone as a radio system.

Initially, phones were connected to only two lines. In June 30, 188, 287 phones were installed, July 750. Ten years later, 167,000 phones and a maze of wire prices were installed. (Pool, Ithiel de Sola; Social impact of the phone; Cambridge, MIT Press, 1977.)

Technology

Mr.. Bell was not the only one who works on ideas that would affect telephone technology. Thomas Edison discovered the first sender and receiver who would be practical for commercial use. He had already invented a type of multiplexing that allowed messages to send in opposing directions simultaneously.

Many more changes occurred in the next few years, and AT & T participated in 1885 to rent a phone to households and offices, but continued ownership of the technology.

Then the switchboard arrived in 1880. At this time there was no call, no signal system and no electronic switch. Calls would turn the handle; get an operator who then connects them to their party and then have their conversation. This type of system had no ringtone to alert calls and no privacy because the network operator is the middle person to hold a call.

After 1946, you made a phone call and # 39; jobs too much for people alone to deal with. Almost a quarter of millions of operators were working for AT & T in 1946, but this figure would significantly decrease the invention of automatic call switching.

Although this switch system was invented in 1889, it was not until 1914 that it was installed on a large scale in New Jersey. It was not until 1976 that the first computerized switch was put into operation and in 1982 almost half of all calls were exchanged electronically.

The Revolution of the Century

The Bell's patent expired at the turn of the century and approximately 6000 independent operator opened a shop. These independent businesses could only be connected locally, AT & T refused to allow them to connect to the domestic system. Instead, they waited for the little guy to go bankrupt and then buy them out.

In 1984, AT & T came out of local telephone service at the end of a ten-year lawsuit that sought to break up the giant telecommunications giant. This demanded the creation of the so-called "Bells" love. This pause also allowed users to have their own phone and connect their own devices.

By the 20th century, the telephone system used cable-worn copper wires that were expensive to install and absorb In the next few years, copper wires would lead to a coaxial cable, then microwave stations, and then satellite telecommunications.

Digital transmission, though not new, did not end in a long time until 1980. Using fiber optic cables , digital transmission was up to 125,000 times faster than copper cable. Copper wire is still in use in many areas due to the high cost of running fiber optic cable for each home, despite the fact that many areas have replaced the lines with fiber optic.

Beyond the Telephone

By studying basic phone and communication at high distances, there were still technical advancements that were waiting to be discovered. Faxm The device uses phone lines to send digital signals to the modem on the reception as a decoder signal in a message. Then come with a mobile phone or mobile phone.

Mobile phones appeared in early 1980 and today millions are in use. Mobile networks use an ordinary phone connection that is connected to the computer center and the senders to send a message. Initially, few transmitters and cell phones were bulky and had to use near towers for a clear transfer.

Within a few years the phones became small enough to fit the palm hand and the towers were almost everywhere. Although there are areas with poor reception, most cell phones are always in a usable area.

Today, cell phones do much more than just allow voice calls, cell phones allow access to the Internet, email, business devices, images and much more.

Source by Sam D Goddard

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