Radio Headsets by Josh Riverside
Headsets, also known as headphones, are hearing devices that are actually miniature speaker systems. They are stereo hearing systems that can be worn near the ear, thus providing mobility to the user. Traditional headsets were bulky and large with two speakers for both the ears encased in padded... Some radio headphones use rechargeable batteries. ... Sound quality, speaker power, bass and treble range are some features to look for in a radio headset. ... The style and comfort are other factors to be considered while buying a radio headset.

Wireless Networks: How Do They Work? by Ron King
Wireless networks use radio waves instead of wires to transmit data between computers. Here's how: The Binary Code: 1s and 0s It's well known that computers transmit information digitally, using binary code: ones and zeros. This translates well to radio waves, since those 1s and 0s can be... More importantly for this example, though, it is a binary system, just as a computer system is. ... You plug in a combined radio receiver and transmitter, and the computer is able to send out its equivalent of dots and dashes (bits, in computer-speak) to get your data from here to there.

A Brief Introduction To Bluetooth by Oliver Dvorak
Bluetooth was designed to allow low bandwidth wireless connections to become easy to use so even those who are new to wireless can use them. Version one.One of Bluetooth describes a low power, short range wireless networking technology that uses radio waves to send data at rates up to 720... Also known for its worldwide operation, Bluetooth radio operates in the 2.four GHz frequency band, which is license free and reachable to any type of radio system in the world. ... The size of the Bluetooth radio is remarkable, as a Bluetooth radio can be built into 1 or two very small microchips then...

Wireless Networks by Elizabeth Morgan
The information age has been revolutionized not just by the power of computers to process data, but also by the power of communication amongst computers. This communication is responsible for the proliferation of computer networks. Sharing of information, sharing of resources (both software and... Wireless networks communicate by modulating radio waves or pulsing infrared light. ... A fixed wireless system supports a little or no mobility of the equipment related to the wireless network. ... A wireless network does not use cables, but instead uses radio waves.

Atomic Clock Systems by David Evans
An atomic clock provides an extremely accurate source of time. There are various types of atomic clock, mostly found in laboratories: Caesium Clocks; Hydrogen Clocks; and Rubidium Clocks. Most commercially available atomic clock time synchronisation systems utilise a radio or GPS time signal... Radio Atomic Clock Time References Radio time transmissions such as the MSF-60 (UK), DCF-77 (Germany) and WWVB (US) time signals broadcast highly accurate time information from a radio transmitter. ... GPS Atomic Clock Time Reference The Global Positioning System (GPS) is a US military system for...

A Brief History of Mobile Computing by Natalie Aranda
The fascinating world of mobile computing has only been around since the 1990s. Since then, devices that have been developed for mobile computing have taken over the wireless industry. This new type of communication is a very powerful tool for both businesses and personal use. ... This actually used to mean radio transmitters that operated on a stable base, usually with the help of large antennas. ... Everyone has probably heard of the Palm Pilot. ... Pocket PCs are another way to conveniently access the internet on the fly.

How To Maintain Accurate Time On Your PC by David Evans
PC's have internal real time clocks designed to maintain system time. The internal clocks rely on relatively low-cost crystal oscillators, which are notoriously inaccurate. In many cases PC system time can drift by several minutes each day. This article describes various methods of maintaining a... Radio and GPS clocks obtain accurate time from national radio timing references or from the GPS system. ... Radio and GPS Clock Timing References There are many commercially available radio and GPS clock timing references for PC's.

Radio Frequency Identification Basics by James Hunt
Radio Frequency Identification or RFID is the use of radio waves to identify objects. This means, unlike a barcode, one can track an item without actually having to come in contact with it. The way it works is that an identifying serial number is stored in a microchip which is then attached to... Businesses that use this system will be able to track products throughout the whole manufacturing process, from the beginning of the conveyor belt to the packaging and beyond. ... The real test will be in 2005 when Wal-Mart begins to implement an RFID system.

How To Decode The MSF-60 Radio Time Signal by David Evans
The MSF-60 atomic clock synchronised radio time transmission is utilised by many NTP Time Server and PC computer systems to provide accurate synchronisation of time critical applications. This article describes how the MSF-60 time signal is decoded by NTP Time Server and computer systems to... The radio signal is maintained by BT Radio Engineering Services under contract from the National Physics Laboratory (NPL). ... The radio signal can be blocked by metal structures or frames, which act as a Faraday cage.

Daylight Savings Time Commeth 3 - Weeks Early - March 11, 2007 by Lance Winslow
Ready or not Daylight Savings time is coming and the estimates are that billions will be saved in energy costs due to the 3-week advance. Now the trick is to figure out how to adjust the time on all your nick-knacks like your iPod, iPhone, Digital Camera (which never has had the right time) and... Your cars clock will be off and the GPS unit will probably update automatically along with your XM or Sirus Radio Satellite Radio. ... Some are predicting major systems failures with computer IT networks, yet it will be nothing like Y2K although many systems which have lots of patch work might...