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Wireless it is an English language word that can be translated as "Without wires" or “Wireless” . Its use, therefore, could be linked to any type of communication which does not require a means of physical propagation. However, the notion of wireless is mainly used to name wireless communications in the context of computer technologies.

In a wireless communication, therefore, the transmitter and receiver are not connected by cables, but instead appeal to the electromagnetic wave modulation through the space for sending and receiving the data .

The computers and the mobile phones They are some of the devices that can use wireless connectivity. For this they must be equipped with cards or antennas prepared for this purpose.

For those dispositives that do not have such an antenna, there are in many cases external adapters of easy installation and, generally, at very affordable prices. In the case of computers, both portable and desktop, that are not prepared to connect over wireless networks, adapters are usually used that connect to a USB port and look for access points or the nearest devices (from according to the technology you want to use, which can be WiFi or Bluetooth, among others).

Radio frequency waves help to communicate when one of the actors has no fixed location. A person with a laptop, for example, can move around various parts of the world and maintain communication thanks to the wireless connectivity of systems such as Wifi .

This is especially useful for people who travel very frequently, since all international airports offer Wi-Fi access points to their clients for free, giving them the possibility of making last-minute inquiries regarding their trips, booking a hotel room or just say goodbye to your loved ones through a session of chat.

At present, however, wired networks still have advantages over wireless networks, especially with regard to the speeds they support. This means that in a net It operates through cables, data is transmitted faster than in a wireless network.

Another problem that wireless networks can face is the Signal loss , when radio waves do not reach the sending or receiving equipment due to interference or various factors environmental. It is known that wireless networks are susceptible to electromagnetic radiation from certain devices, very common in homes and offices, so a WiFi connection does not usually give its users the same speed as when using the same service through a connection via cable.

In the case of computer peripherals and consoles of video games, in the 90s several wireless alternatives to traditional keyboards, mice and controls emerged, but they always had to face the limitations of the batteries: their size is directly proportional to their capacity (which inevitably affects the weight they add to the product they feed) and the production cost is very high.

Over the years, batteries become increasingly economical, but the demands of the devices are greater. For example, the latest generation mobile phones, capable of taking photos and videos, connecting to the Internet, playing music and movies, running video games and all kinds of applications, do not usually have a range of more than 24 hours, time which decreases considerably the more calls are made.

Anyway, the comforts that the technology wireless are many and very tempting, especially because they give more flexibility when it comes to arranging the devices in a room and protect them from falls due to tangles with the cables.

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