TECHNOLOGY COMMUNICATION 

       Technology communication : is an umbrella term that includes any communication device or application, encompassing:  wered communication, radio, television, mobile phones, computer , internet and  satellite systems.

   The difference type of technology communication：

• Wired communication
• Radio 
• Televition
• Phone
• Internet

    Wired communication is the transmition of information through wired. There are two common wired technology :copper wire and optical fibre.

         - Copper wire: is used in power generation, power transmission, power distribution, telecommunications , electronics circuitry, and countless types of electrical equipment.

         - Optical fibre:  is a flexible, transparent fiber made of glass or plastic, slightly thicker than a human hair. It can function as a waveguide, or “light pipe”, to transmit light between the two ends of the fiber.

   Radio  is the wireless transmission of signals through free space by electromagnetic radiation of a frequency significantly below that of visible light, in the radio frequency range, from about 30 kHz to 300 GHz.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space.

     The communication is only from the radio station to the listener and the waves used are of radio frequency.

  Television  is more complex than a radio because it also receives images. Is continuos moving images and sound

is converted to electrical signals and electrical signals transmitted through various channels, then the signal to the

electronic

  Phone  is  a device that can make and receive telephone calls over a radio link while moving around a wide

 geographic area.

  Internet is  a global system of interconnected computer networks that use the standard Internet protocol suite (Tcp／Ip ) to serve several billion users worldwide. It is a network of networks  that consists of millions of

private, public, academic, business, and government networks, of local to global scope, that are linked by a broad

array of electronic, wireless and optical networking technologies.

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