Alexander Graham Bell probably had no idea that he discovered that ultimately change the world in more ways than you can imagine. The technology, which was launched phones has led to several discoveries in the field of telecommunications to keep people in touch and connected to the world.
The first few days
March 10, 1876 Alexander Graham Bell first speech mediated by the use of electricity. From that day on, the phone system has changed every aspect of life. Despite not immediately change the world, you have to communicate in the way that would change the future of communication.
lack of acceptance of the initial discovery of Mr. Bell was due to the telegraph to the dominant form of communication and it's been around for more than 50 years. This is the voice of the whole electrical wiring that Mr. Bell has proposed a new and frightening discovery.
In the late 1870s, Bell took a public telephone demonstrations on the road in an attempt to draw attention to the project and public finance. Mr. Bell introduced the telephone as a broadcast system.
Initially, only two line phones. In June30, 188 287 phones were installing July was 750. Ten years later it would be over 167 000 phones and a maze of wires. (Pool, Ithiel de Sola, _The Social impact of Telephone_, Cambridge, MIT Press, 1977).
. Bell was the only person working on ideas that would affect the telephone technology. Thomas Edison invented the first transceiver would be impractical for commercial use. Have they invented a kind of multiplexer, which made it possible to what message sent in opposite directions simultaneously.
There are many more changes come in the next few years, and AT & T in 1885 to build homes and offices leased phones, but remaining in the ownership of the technology.
Then in 1880 came the switchboard on board. During this time, there was no dialing, no warning system, and there is no electronic switches. Callers would crank handle; get an operator who will connect them to the party and then the conversation. This type of system was no bell to alert for incoming calls and no encryption because market players are the middle man holding the call together.
1946 number telephone switchboard operator jobs callers made too many people to handle alone. Nearly quarter of a million entrepreneurs working with AT & T in 1946, but this figure is considerably reduced in the present invention, the automatic call switching.
Although the switching system was found in 1889, it was not until 1914 that is installed on a large scale basis in New Jersey. Then it was not until 1976 was the first computer switches into action and in 1982 almost half of all telephone calls were exchanged electronically.
Turning the Century
Bell patent ran out of the turn of the century, and about 6,000 independent telephone companies opened shop. These independent companies can only connect locally, AT & T did not allow them to turn the national system. Instead, he waited for the little guy to go bankrupt, and then bought them.
In 1984, AT & T local telephone service got out at the end of a ten-year-old lawsuit push into the telecom giant. This has resulted in the formation, known as the "baby bells". This break also allowed users own their phones, and hang them on their devices.
Prior to the 20th century used phone systems twisted copper wires, which are costly to install and absorbed a large electric power. In the coming years would see copper wire gives way coaxial cables and microwave station and a communications satellite.
digital transmission, although not new, has not come to the phone to play a big way until the 1980s. Fiber-optic cables, digital transmission up to 125,000 times faster than a copper cable. Copper is still in use in many areas because of the high cost of running fiber optic cable in every home, although many areas have been replaced by fiber optic cable line.
Once you have mastered the basic telephone and via communication over long distances, is still in the development of technology waiting to be discovered. The fax phone lines using a modem receiving digital signals, which decodes the signals messages. Then came the mobile or cell phone.
Mobile phones released in 1980 and is now in use millions. the use of mobile networks to regular phone jack system is a computer-controlled centers and towers to transmit the messages. Originally, there were some transmission towers and mobile phones were bulky and had to use near towers in order to clear transmission.
Within a few years, the phones became small enough to fit in the palm of a hand and the towers were located almost everywhere. Although there are zones of poor reception, most of the mobile phone is always a usable space.
Today, mobile phones are not much more than making voice chat, mobile phones allow access to the Internet, e-mail, business applications, pictures, and much more.