Saturday, December 12, 2009

13-Dec-09 - 2. Communication

Letters and Pigeons
In the very early days of our time where there is not any form of electronics communication. People relay on letter send by the postman on the horseback from Town - to - Town.
For urgent delivery, pigeons are use to carry short message quickly for one place to another. ( Bird's SMS - fly by the air ). In those time, no one in one town will know what have happen to another town. There is no communication at all.

Telephone and Morse Code
Right after the stream engine was invented, there are massive railway line that town and people together. One of greatest invention is the telephone. Telephone cable wire lay between railway station to provide communication. Morse Code is also use to communicate and provide short coded message ( Railway's SMS ). Using dash and dot, e.g. --- ... --- mean SOS, message were send from one town to another by the Morse code operator and at the other end the operator decode the received message.

Telephone Switch board & Modern Electronics
Another clever invention is the telephone switch board and relay switch board. Telephone call
is make by rotating the number Dali. A great invention call the Cathode ray tube that make amplifier possible.

Radio, Telephone and Radio Communication
Radio transmission was made possible after the invention of the tubes. Amplifier circuit built to transmit radio wave across the city. Large radio set was manufacture to allow listener to tune in the radio broadcast program. Radio Communication network is being build to connect city to city and Ship to Shore.

Transistors, Television, Pagers
Another great invention is the transistor ( Silicon Amplifier ) and it make it possible to build more complex circuit board for Radio, Television and other Electronics equipment. Many other equipment like the tape recorder, video recorder was also built at these time. Radio Car phone make phone conversion between home and car possible. Pager : A device that carry by people and it will sound when some page for you and in turn you call the teleco company and they will retrieve a short message for you ( Voice's SMS )

Mobile Phone Network , SMS , 2 G services
The honeyc0mb mobile telephone that provide seamless communication between cells. Nokia invent the SMS technology ( The current SMS ) that allow mobilephone user to send Short messages instead of making voice call. The popularity pickup in many counter and all teen and youth keep on texting using their mobile phone. The WAP service that is suppose to be good did not take off as very little company support the WAP services.

3 G , Video Call, High-Internet Mobile traffic
Third G network is make possible due to improvement of LSI technique. Most Transitor can be place onto a small peiece of silicon wafer. This also reduce power usage. 3G Video is make possible where phone manafuture is able to squeese in tiny camera on a phone.



No comments:

Post a Comment