Hardware
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TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of the Internet. It can also be used as a communications protocol in a private network (either an intranet or an extranet ). When you are set up with direct access to the Internet, your computer is provided with a copy of the TCP/IP program just as every other computer that you may send messages to or get information from also has a copy of TCP/IP. TCP/IP is a two-layer program.
What is TCP/IP (Transmission Control Protocol/Internet Protocol)? - Definition from WhatIs
Much of the talk around the tech world recently has been focused on Project Glass – aka Google Glasses – the wearable heads of display that many think could revolutionize the way we interact with apps, photos, video, and really the internet in general. But Google’s not the only company that’s dying to put a computer on your face . Even Apple seems to have joined the fray, recently patenting their own little version of Google Glasses . It definitely feels like this type of technology is the future, as companies everywhere are rushing to get in on the ground floor. But before we go turning everyone’s life into one giant computer interface – should we pause and think of what could happen in the not-so-distant future…if things took a turn for the darker side? At first, this type of technology will come in the form of glasses.
Short Film “Sight” Shows Us The Dark Side Of Project Glass-Like Technology
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Buying a wi-fi router these days is no easy task. Long gone are the days where one model rose above the rest: now there are routers with different features, some that focus on range, others that focus on speed, and still others with advanced features like NAS support and traffic shaping options. This week we're going to take a look at five of the best home wi-fi routers, based on your nominations. Earlier in the week, we asked you which wireless routers you thought were the best for customization, range, signal strength, and features.
Five Best Home Wi-Fi Routers
Wireless Earbuds For iPod
If you are looking for wireless earbuds for your iPod maybe this article will make you decide which earbuds are good for you. This wireless earduds are perfect if you want to run in a park or any other sport activates because you can listen to your favorite music without cord or wires. <-300x250 Medium Rectangle - center-> If you are looking for wireless earbuds you should know that there are 2 types: the ones that connect directly to your iPod and the ones that connect to your iPod through an iPod adapter. Most of the wireless earbuds for iPod use the Bluetooth protocol to connect to your iPod and some of them use other wireless protocol. The fist wireless earbuds we are going to present are the Sennheiser MX W1 Totally Wireless Earphones.Polk Audio, one of the classic manufacturers of high-end room speakers, have taken their first step into headphone-land with their recent UltraFit line of sports headphones. The ergonomic fit of some exercise-specific headphones can sometimes be difficult and too often we find the earpieces won't stay correctly in the ears when actively exercising and jumping about. While the fit design of the UltraFit 500 doesn't technically fall too far outside of "difficult", once you figure it out, they'll fit very securely and feel like they would stay perfectly in place through even the most aggressive of work-outs. The earpiece fit into the ear is fairly shallow which allows you to remain at least somewhat aware of your ambient environs when jogging city streets, for example.
Polk Audio UltraFit 500 headphones
Best Headphones for Indoor or Outdoor Exercise Anyone who hits the gym or runs knows that awesome music is a huge asset to any exercise routine. After all, nothing can get you motivated for a hard workout quite like your favorite tunes. When choosing your 'sport' headphones, it's important to consider where you'll be listening -- indoors or outdoors. Indoor exercise at gym or home is typically best done with good in-ear headphones or closed headphones which can isolate at varying levels from ambient noise and distractions.
Best Headphones For Running and Exercise- 2011 Gear Guide
If you've got $600 burning a hole in your regrettably flammable pockets, and if you've got a medically recognized phobia of wires, you've probably already been considering Sennheiser's MX W1 wireless earbuds . While we're not going to try to sway your purchasing decision one way or the other, we did want to share a couple shots of the beauts. You're probably most interested in the receiver and, for example, how it sizes up compared to a new iPod nano. Well, we just so happen to have some pics of precisely that, so click on through and sate your insatiable curiosity. <p style="text-align:right;color:#A8A8A8"></p>
Hands-on with Sennheiser MX W1 wireless earbuds
The industrial, scientific and medical (ISM) radio bands are radio bands (portions of the radio spectrum ) reserved internationally for the use of radio frequency (RF) energy for industrial, scientific and medical purposes other than communications. [ 1 ] Examples of applications in these bands include radio-frequency process heating , microwave ovens , and medical diathermy machines. The powerful emissions of these devices can create electromagnetic interference and disrupt radio communication using the same frequency , so these devices were limited to certain bands of frequencies. In general, communications equipment operating in these bands must tolerate any interference generated by ISM equipment, and users have no regulatory protection from ISM device operation. Despite the intent of the original allocations, and because there are multiple allocations, in recent years the fastest-growing uses of these bands have been for short-range, low power communications systems.
ISM band
Wi-Fi (also spelled Wifi or WiFi ) is a popular technology that allows an electronic device to exchange data wirelessly (using radio waves ) over a computer network , including high-speed Internet connections. The Wi-Fi Alliance defines Wi-Fi as any " wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers ' (IEEE) 802.11 standards ". [ 1 ] However, since most modern WLANs are based on these standards, the term "Wi-Fi" is used in general English as a synonym for "WLAN". Only Wi-Fi products that complete Wi-Fi Alliance interoperability certification testing successfully may use the "Wi-Fi CERTIFIED" trademark. A device that can use Wi-Fi (such as a personal computer, video-game console, smartphone , tablet , or digital audio player) can connect to a network resource such as the Internet via a wireless network access point .
Wi-Fi
IEEE 802.11
IEEE 802.11 is a set of standards for implementing wireless local area network (WLAN) computer communication in the 2.4, 3.6 , 5 and 60 GHz frequency bands. They are created and maintained by the IEEE LAN / MAN Standards Committee ( IEEE 802 ). The base version of the standard was released in 1997 and has had subsequent amendments. These standards provide the basis for wireless network products using the Wi-Fi brand.United States radio spectrum frequency allocations chart as of 2011 United States radio spectrum frequency allocations chart as of 2003 Use of radio frequency bands of the electromagnetic spectrum is regulated by governments in most countries, in a Spectrum management process known as frequency allocation or spectrum allocation .
Frequency allocation
Bluetooth , is a wireless technology standard for exchanging data over short distances (using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security. Created by telecom vendor Ericsson in 1994, [ 2 ] it was originally conceived as a wireless alternative to RS-232 data cables. It can connect several devices, overcoming problems of synchronization.
Bluetooth
Fixed wireless
Fixed wireless is the operation of wireless devices or systems used to connect two fixed locations (e.g., building to building or tower to building) with a radio or other wireless link, such as laser bridge . [ 1 ] Usually, fixed wireless is part of a wireless LAN infrastructure. The purpose of a fixed wireless link is to enable data communications between the two sites or buildings. Fixed wireless data (FWD) links are often a cost-effective alternative to leasing fiber or installing cables between the buildings. The point-to-point signal transmissions occur through the air over a terrestrial microwave platform rather than through copper or optical fiber ; therefore, fixed wireless does not require satellite feeds or local telephone service. The advantages of fixed wireless include the ability to connect with users in remote areas without the need for laying new cables and the capacity for broad bandwidth that is not impeded by fiber or cable capacities.Electromagnetic interference at 2.4 GHz can affect various devices. This article details the different users of the 2.4 GHz band, how they cause interference to other users and how they are prone to interference from other users. [ edit ] Phone