In this information age, computer networks have made a great contribution to the exchange of information, thanks to the support of electronic communications and access to the information superhighway - the Internet. "Computer network" refers to the connection of two or more computers and other related devices, mainly for the exchange of information. The whole world is going wireless! New technologies and standards published over the past decade mean that almost everything we touch has every aspect of our lives a wireless component. From cordless phones in homes to cell phones that are used around the world - for wireless local, urban and global networks.
Just like personal computers (PCs) in the 1980s changed our work forever, and the Internet in the 1990s dramatically changed the way we get information, wireless communication revolutionizes how we live. Using wireless networks to send and receive messages, browse the Internet, and access corporate databases from virtually anywhere around the world has become commonplace. A wide range of devices, from computers to digital cameras, laser printers and even refrigerators, can already exchange data wirelessly.
Virtually every type of business requires a computer network, but many of them cannot establish traditional wired networks due to the physical limitations of such systems. Wireless networks can go where there is no conventional wired networks. Wireless applications, i.e. The use of wireless technology in everyday business activities, can be found in any industry where employees need mobility and freedom to do business without being tied to a specific place. Industries and areas, such as education, construction, health care and government agencies, are among those who use wireless technology to make a number of activities faster and more convenient.
All wireless networks transmit and receive data over the air using an electromagnetic wave — especially infrared, microwave, or radio wave signals. Wireless networks can be grouped into three main categories; Wireless personal area networks (PAN), wireless local area networks (LAN) and wireless wide area networks (WAN).
