While Novatel Wireless has copyrighted to name MiFi, it has gone on to mean so much more. Mi-Fi literally stands for my-wifi. In other words, it is a personal credit card shaped piece of hardware that acts as a personal WiFi hot spot for you and a few other computers that you allow onto the network. Once connected to the Mi-Fi, a user can have access to high speed Internet that they would typically find from a traditional WiFi setting. How Does Mi-Fi Work? Mi-Fi works by having this compact Read More

The terms Deep Web, Hidden Web, Invisible web and Deep Net describe the portion of the World Wide Web that is not visible to the public or has not been indexed by the search engines. Some portions of the deep web consist of dynamic pages accessible only via a form or submitted query. Web pages that are not linked to other pages are also part of the deep web. They are, in effect, invisible; search engine crawlers will not be able to find them since they have no backlinks or Read More

Inkjet printers contain hundreds of parts all working together to put millions of microscopic dots onto paper. There are five main components of an inkjet printer: print head, paper feeder, circuit board, power supply, and the case. Of these, the print head and paper feeder are the most interesting. The Print Head The print head contains an array of microscopic nozzles that fire drops of ink onto the paper. In some cheap printers, the print head is not even part of the printer, but part of the ink cartridge. There Read More

Many street lights are equipped with Traffic Signal Preemption systems like the 3M Opticom or the Tomar Strobecom. These systems enable emergency vehicles to change the traffic signals from Red to Green, and to change the traffic signals for others from Green to Red. This enables emergency vehicles to travel more quickly and more safely. These systems operate by means of a receiver mounted on the traffic signal and a transmitted mounted inside the emergency vehicle. The transmitter is an infrared light which is flashed at the receiver. The transmitter Read More

The OSI Model was created based on recommendations from the International Organization for Standardization (ISO) in 1980, which started expanding on the DoD model in the late 1970s. The current standard was published in 1996. The official title for the model is the ISO OSI (Open Systems Interconnection) Reference Model since it describes or relates to connecting systems that are open for communication with other systems. In the model, the functions of the communication system are standardized by categorizing them into abstract layers. The functions which are similar are grouped Read More

A DBS, or Direct Broadcast Satellite, is a type of satellite that is used to broadcast data directly to a residence or commercial office, without the use of intermediary cables or other routing equipment. DBS systems are most commonly used for direct broadcast television and Internet access, in which users from anywhere in the world can receive television and Internet services even if no local cable companies are available. Because DBS systems are able to transfer data directly to and from a residence or other property without the use of Read More

With an increasing number of people listening to music via their MP3 player or iPod, it is no wonder that there is such a large demand to play their favorite digital tunes in their vehicle. Unfortunately, for most vehicles, there is no easy way to connect most MP3 players. Due to the high demand, many companies have created products that make it extremely easy to listen to an MP3 player in a vehicle. Here are just a few ways to connect an MP3 player to a car stereo: Wireless Adapters Read More

A spark gap consists of two electrodes separated by a small gap that is filled by a gas, usually air. The potential difference across the gap increases until it reaches the level where the gas ionizes and current flows across it for a brief time. The two types of spark gap are the static and rotary. Static spark gaps require the use of high voltage which causes their electrodes to erode. Spark gaps also create interference which causes noise in nearby radios and televisions. Rotary Spark Gap The rotary spark Read More

An object is a set of attributes that represents a network resource, say a user, a computer, a group policy, etc and object attributes are characteristics of that object stored in the directory. For example, some of the attributes of a user object might include the user's first name, last name, department, and e-mail address in addition to others. Organizational units act as a container for objects. Objects can be arranged according to security and administrative requirement in an organization. You can easily manage and locate objects after arranging them Read More

A RAR file is a special computer file format that can store single or multiple documents and folders in a compressed form. The file can later be decompressed to extract the original documents and folders. The term RAR is an abbreviation of Roshal ARchive, derived from the name of its creator Eugene Roshal. The RAR compression software is available for a wide range of platforms like Windows, Linux, Mac OS X, DOS, OS/2, FreeBSD and others. The Windows version is called WinRar. File compression programs gained popularity during the early Read More