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

Blackbody radiation refers to the electromagnetic radiation that a blackbody material expels. Blackbody materials are substances that absorb all electromagnetic radiation that comes in contact with it, including light and heat. While a perfect blackbody material does not exist in nature, substances such as ash, soot, and granite come close. When a blackbody material is irradiated with light or radio frequencies, it circulates the energy and releases it as heat. Alternatively, when the blackbody material is irradiated with heat, it dispenses the energy as a radio frequency. In this way, Read More

A sector is a small area on the surface of a hard drive or floppy disk. Hard drives usually have several platters. The platters are the discs that are covered with magnetic material, which is used to hold data. Floppy disk drives contain only one platter. Platters are divided into a set of concentric rings called tracks. A 1.44MB floppy disk has 160 tracks. Hard drives have thousands of tracks. Each of these tracks is divided into smaller storage areas called sectors. A sector is the smallest storage area on Read More

A dual core processor is part of a category called multi-core processors. These computer processors have more than one independent processor on the chip or package. In the case of a dual core processor, the entire chip has two independent computer processors that can work together to increase total computer performance. For non-technical consumers, dual core processors can be thought of as having two separate computer chips combined. One of the biggest advantages of having a dual core processor is the computer’s ability to perform thread level parallelism. A thread Read More

The term "net neutrality" or "network neutrality" arose from a set of concerns regarding the role of telecommunication and cable companies or Internet service providers (ISPs) in the delivery of data over the internet. It generally refers to the idea of equal access to content delivered over the Internet and non-discrimination of Internet content providers, types of content (text, video or audio) or methods of their transfer (HTTP, FTP, bittorrent). Advocates of net neutrality typically call for a legal mandate that would ensure net neutrality by restricting ISP's from practices Read More

Configuring VPN Connectivity Virtual Private Networks (VPNs) provide secure and advanced connections through a non-secure network by providing data privacy. Private data is secure in a public environment. Remote access VPNs provides a common environment where many different sources such as intermediaries, clients and off-site employees can access information via web browsers or email. Many companies supply their own VPN connections via the Internet. Through their Internet Service Providers (ISPs), remote users running VPN client software are assured private access in a publicly shared environment. By using analog, ISDN, DSL, Read More

The decibel is a standard unit for measuring relative levels of current, voltage, or power. The decibel shows the ratio between the input and the output. Decibel is abbreviated dB. A minus sign before the dB indicates a loss and a plus sign or no sign at all before the dB indicates a gain. The Decibel Formula The decibel value of a change between input and output can be expressed utilizing the following algorithm: db = log10 Input / Output A Decibel Table Decibel Gain Ratio of Gain 1 1.3 Read More