COMPUTER NETWORK
Three centuries before now, each marked with a different domination. The 18th century was dominated by the development of a mechanical system that accompanied the industrial revolution. The 19th century is the era of the steam engine. The 20th century, the technology of radio, TV and the computer plays for the collection, processing and distribution of information media. The 21st century is now or age-information, which technology global computer network able to reach all regions of the world, the development of systems and technologies used, the dissemination of information through the internet, the launch of the satellites of communication and communication devices of wireless / cellular marks the beginning of the century millenium.