Bluetooth is a wireless communication protocol standard that allows wireless devices to communicate with other wireless devices in the area by using shortwave radio transmissions. Bluetooth is a relatively new technology but has quickly become integrated with most modern wireless devices, such as cell phones, PDAs, cameras, and virtually any device that is equipped with a Bluetooth adapter. Bluetooth allows users to share files such as pictures, audio clips, documents, and address book contacts and provides a very high level of security.   What is an iPod Touch? The iPod Read More

An external hard drive is a storage device that does not sit inside the computer’s chassis. Instead, it connects to the computer via a USB port. Users can carry the external hard drive with them and access their files from any computer in the world. External hard drives can store many hundreds of gigabytes and depend on plug-and-play technology to automatically install all necessary drivers on the host computer when the device is connected to the computer, much like how USB flash drives work. How to Install Windows OS on Read More

Downlink is a term in telecommunications that is used to refer to a data transmission in which data flows from an orbital satellite receiver to a ground-based transmitter. Downlink transmissions rely on the C Band between 3.7 and 4.2 GHz, the Ku Band between 11.7 and 12.7 GHz, and the Ka Band between 18.3 and 18.8 GHz, as well as between 19.7 and 20.2 GHz. Downlink is often used in astronomy, radio science, and telecommunications.   How Downlink Works When a ground-based transmitter transmits data to a satellite in Earth’s Read More

The term algorithm is used in a variety of fields, including mathematics, computer programming, and linguistics. Its most well-accepted definition is something that consists of a finite list of instructions (which are well defined) that can be used to accomplish a task. Basically, when an algorithm is given some initial state, it will use the list of instructions to produce a variety of different, and sequential, states – eventually leading to the final or terminating state. Although the term algorithm is most closely associated with modern day computing applications, its Read More

Networking a printer makes  it possible for anyone in the house or office to print files directly from their computers using the same printer. Setting Up The Printer Open the Control Panel in the Start menu. Click on “Printers and Other Hardware”, and then click “View installed printers or fax printers. If you are using ‘classic’ control panel, double-click on “Printers and Faxes”. From the list of installed printers, select the printer you want to share, then click “Share this printer” in the right side menu. The printer properties dialog Read More

The Zachman Framework gives a formal and structured method for defining and looking at an Enterprise Architecture framework. It is a 2D classification matrix that uses six basic communication questions – Who, What, When Where, Why, and How. These are expressed as six rows in the architecture depiction using a reification transformation. The framework is not considered a methodology, as it does not define the processes for collecting, managing, and using the data that it describes to gain potential insights on Enterprise relationships or operations. John Zachman first developed the Read More

Wireless power induction is already being used today in the form of electric toothbrushes. An electric toothbrush contains coils or loops in the toothbrush handle as well as in the base recharging unit. Because of their constant exposure to water, electric toothbrushes have to use inductive coupling as a means of recharging their batteries. Inductive Coupling Inductive coupling involves the use of magnetic fields to stimulate the movement of current through a wire. A current moving through a wire generates a magnetic field around it and vice versa. Thus, to Read More

The Wii is a home video gaming console created and marketed by the influential video game company, Nintendo. Its primary market rivals are Microsoft’s Xbox and Sony’s PlayStation, and Wii is presently ahead of them in terms of sales. Wii was first conceptualized by Nintendo in 2001, and was officially released in 2005 at the Electronic Entertainment Expo (E3). The key difference between Wii and its competitors is the Wii Remote, which is a wireless controller. It can be used as a handheld pointing device and motion detector in three Read More

A DNS zone is the contiguous portion of the DNS domain name space over which a DNS server has authority or is authoritative. DNS zones contain either domains or subdomains. The DNS namespace can be divided into multiple zones. Users can even host all their zones on a single DNS server. The Windows Server 2003 DNS Server can host up to 20,000 DNS zones. A DNS zone contains a zone database that contains resource records for all the domains within the zone. Zone files are used if DNS is not Read More

WRAP (Wireless Robust Authenticated Protocol) is an encryption protocol in the 802.11i standard. WRAP is based upon the Offset Codebook (OCB) mode of AES. WRAP is being Replaced with CCMP Intellectual property rights issues have plagued WRAP. Three different parties have filed for patents on WRAP. These intellectual property issues caused the IEEE to introduce CCMP into the 802.11i standard and make WRAP an optional component of RSN (Robust Secure Network).