Data Transfer From One Device

6. Why is Ethernet technology more appealing to users than the rest of the LAN technologies?

Today frequency hoping, wifi, is used in phones, tablets, computers, etc. Without wifi these devices wouldn't be what we know them today as. They might not even exist. They would used for simple things such as calculations or simple games. Imagine life without the internet. Well without wifi the Internet would not exist, and the world would be a totally different place. Another thing the devices would be used for would be word processing.We could still have Word, but it might not have all the cool features it has today. For example, wouldn't exist, or wireless printing. Just think about if you had to have a printer plugged into every computer just so you could print an essay. To say the least these products wouldn't exist, or they would not be that popular without the invention of wifi.

4. Radio: most common form of wireless transmission, typical of home routers and most wireless devices to use this form. Infared uses low frequency light waves to carry data using line-of-sight.

In the recent years, wireless technologies have taken a new dimension in the ways society lives. Wireless broadband is available to everyone. Whether the users are at home, driving the car, sitting in the park, and it would even work while people are a pleasure boat ride in the middle of a lake. And because of this, the need to have information at any time and be connected in all places, all the time has been satisfied.

The market for wireless communications has experienced incredible growth over recent years and wireless LANs have rapidly become a very

The invention of wifi didn't start as, well, wifi. It started with a woman named Hedy Lamar. She was born Jewish during WW2. She fled to America where she became the most beautiful actress ever. People saw her only for her looks, not her brains. She invented many things, stupid things, like a new Kleenex box. But, one day, she thought that if pianos could hop from note to note, so could radios from frequency to frequency. So she and a partner invented Frequency Hopping. Her thought process was if radios hopped from signal to signal, it couldn't be jammed or hacked into. It was called, Frequency Hopping. It was presented to the Navy, and they turned it down. Lamar got a patent for it, but in years later sold it off to the Navy. She watched it

According to an online database, Radio waves is a certain type of electromagnetic radiation that contains “frequency of between 300 GHz to as low as 3 kHz” (“Radio waves”, 2014). [Definition]. a. Netting (2007) states that radio waves have the longest wavelengths in the electromagnetic spectrum. b. Dictionary.com defines Electromagnetic radiation as electric and magnetic energy waves which move together at the speed of light (2014).

Wifi allows us to search things up by using a browser (Google, Bing, Yahoo, etc.). A lot of people today find things out by simply typing in a word or phrase and can get information about the subject or object easily. All we have to do is type in a

As you probably realized, you use wifi everyday for multiple reasons. What you probably didn't know was how wifi came about. Many years ago, a lady named Hedy Lamar befriended a Hollywood composer named George Antheil. Together, they realized if a player piano could jump from note to note, so could a radio signal. Hedy proposed the idea to the Navy to torpedo German U-Boats in the Atlantic, but she was turned down and told to try and raise money instead. Throughout the years, Lamar's career started to slowly decline as others stole her idea of frequency hopping. In the end, Hedy earned no money from her idea, and her beauty was much more noticed than her brains.

So the transmitter can increase the output of the antennas in the direction of computers farther away or where there are more computers to allow for better coverage or throughput and decrease the output of the antennas in directions where there are obstacles.

To implement proposed and existing schemes and compared in terms of throughput, delay and packetloss

Insufficient Radio spectrum cannot cope up with the demands of the everyday data usage. But optical light spectrum has a huge advantage in terms of the range. Higher data transmission rates of around 10Gbps.

The transmitted signal is the converted into binary bits. The switch is used to to turn on the LED bulb. The LED bulb transmits the binary bit. Speed of transmission is dependent on the turn on and turning off speed of LED bulb. Normally in Li-fi system the speed of transmission is very high as the LED is turned on and off at speed of nanoseconds. The transmission of data in Li-Fi is in form of 1’s and 0’s.When LED is on it transmits 1 and when it is off it transmits 0. The data transmitted by the LED is received by the Li-Fi dongle connected to the system operating on the Li-Fi. This Dongle consists of photo detector, amplification and processing section and data receiving section. The photo detector detects the light and then converts it into the appropriate electrical signal. This signal is then given forward for amplification and processing. The signal is then processed and amplified for sending it to the user. Due to amplification of the signal the user receives a high speed. As the computer or electronics devices operates on digital signals so the amplified electrical signal is then converted back into digital form and given to the user device operating on it. As the Li-Fi system consists of basic elements that are available easily so the Li-Fi system is cheaper as compared to Wi-Fi.

Advancements in the information technology sector have brought many benefits to the people all around the world.  Today with computer networking, we can chat, speak and see each other over a long distance. Data communication refers to the transmission of the digital signals over a communication channel between the transmitter and receiver computers. Communication is possible only with wired and wireless connectivity of the computers with each other.

For years, infrared LED has been merely a system for piping light around corners and into the inaccessible places to allow the hidden to be lighted. But now, infrared LED has evolved into a system of significantly greater importance and use. Throughout the world, it is now being used to transmit voice, television and data signals as light waves. Its advantages as compared with conventional coaxial cable or twisted wire pairs are manifold. As a result, millions of dollars are being spent to put these light wave communication systems into operation.