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The following article was published in our article directory on October 4, 2014.
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Wireless Networks - Can you say Morse Code?

Article Category: Computers and Technology

Author Name: Richard Kinney

Wireless networks use radiotelegraphy rather than wires to transmit data between computers. Here's how:.

The Binary Code: 0s and 1s.

It's very well known that computers transmit information digitally, using binary code: zeros and ones. This translates well to radiotelegraphy , since those 0s and 1s have the ability to be represented by different types of beeps. These beeps are so fast that they're outside the hearing range of humans.

Morse Code: Dashes and dots.

It works like Morse code, which is a way to transmit the alphabet over radiotelegraphy using dots (short beeps) and dashes (long beeps). Morse code was used manually for decades via telegraph to get information from 1 place to another very quickly. For this example, though, it is a binary system, just as a computer system is.

Wireless networking, then, can be considered Morse code for computers. You plug in a combined radio receiver and transmitter, and the computer is ready to transmit out its equivalent of dashes and dots (bits, in computer-speak) to get your data from here to there.

Frequencies and wavelengths.

You might wonder how the computer can send and receive data at high rates of speed without becoming garbled nonsense. The key to wireless networking is how it gets around this problem.

Wireless transmissions are sent at very high frequencies, which allows more data to be sent per second. Most wireless connections use a frequency of 2.4 gigahertz (2.4 billion cycles per second)-- a frequency comparable to mobile phones and microwave ovens. This high frequency produces a wavelength that is very short, which is why wireless networking is effective only over short distances.

Wireless networks also use a technique called "frequency hopping." They use dozens of frequencies, and constantly switch among them. If they transmitted on a single frequency, this makes wireless networks more immune to interference from other radio signals than.

Internet Access Points.

An access point is more expensive than a wireless card for 1 computer, because it contains radios capable of communicating with around 100 computers, sharing internet access among them. With only a few computers, it is possible to use 1 of them as the access point, or to use a wireless router.

Industry Standards.

Because there are standards which guide the production of all wireless devices, Wireless equipment from different manufacturers can work together to handle these complex communications. These standards are technically called the 802.11. Wireless networking is both easy to use and affordable today because of industry compliance with these standards.

Wireless Is Simple To Use.

If all this talk of frequencies has you worried-- relax.. Wireless networking software and hardware handle all of this automatically, without need for user intervention. Wireless networking, for all its complicated ability, is far simpler to use than you might expect.

Most wireless connections use a frequency of 2.4 gigahertz (2.4 billion cycles per second)-- a frequency similar to mobile phones and microwave ovens. With only a few computers, it is possible to use 1 of them as the access point, or to use a wireless router.

Wireless equipment from different manufacturers can work together to handle these complex communications because there are standards which guide the production of all wireless devices. Because of industry compliance with these standards, wireless networking is both easy to use and affordable today.

Wireless networking, for all its complicated ability, is far simpler to use than you might expect.

Keywords: wireless network

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