Quadrature Amplitude Modulation (QAM) is a complicated name for a simple technique. In the simplest of terms, Quadrature amplitude modulation is the combination of amplitude modulation and phase shift keying. More technically, quadrature amplitude modulation is a system of modulation in which data is transferred by modulating the amplitude of two separate carrier waves, mostly sinusoidal, which are out of phase by 90 degrees (sine and cosine). Due to their phase difference, they are called quadrature carriers. Unmodulated signals exhibit only two positions enabling a transfer of either a 0 Read More

Television has had a foothold in our society for decades and while many people still get their TV from cable companies, others are switching to satellite TV. Satellite TV provides customers with several important features that they cannot get from cable companies, the most important being the fact that satellite TV can provide television access to anywhere in the world while cable companies are limited to areas that they can run cables through. In this article, we will explore how satellite TV works so that you can understand what satellite Read More

MCX is a type of connector developed in the 1980’s and used in the microwave transmission range. It carries frequencies of up to 6 GHz and is the second smallest of the subminiature connector families. At approximately 30% smaller than Subminiature B connectors (measuring in at 0.140 inches on the outer diameter of the plug), MCX is designed to completely minimize any leakage at its joints. The MCX connector is used with a standard coaxial cable and features a snap-on interface in which the connectors are simply pressed together to Read More

Backscatter X-ray machines were built specifically for airport security. Backscatter X-ray technology can strip off a person’s clothing in the captured image to show him or her practically naked. In the process, it will show any contraband such as ceramic knives, liquid explosives or drugs that the person was carrying but were previously undetectable by metal detectors or conventional X-ray machines. The backscatter scanner can, therefore, see through clothes and provide photo-quality views of its subject. Conventional X-Ray Technology X-rays are usually seen as operating in this way: the machine Read More

HTML Tutorials Welcome to our HTML Tutorials section. This is a compilation of HTML topics that will you help you start writing HTML codes. It comes with the latest HTML standards, as well as the basic and advanced HTML topics. Text Formatting Tutorial This section will teach you how to use html tags for formating a a text in a web page and will show you how to make paragraphs, create a headline, and customize fonts. Working with Tables Tutorial This has all the topics on how you would be Read More

A computer is a device that can receive inputs, calculate actions, perform tasks, and provide outputs based on the actions it took. Computers can process an amazing amount of information and can be used to perform a wide variety of functions, which is why they are now used in virtually every system in the world. Computers range from home uses such as finances, gaming, and word processing to industrial uses such as traffic control, navigation, and communication. Input Devices Computers have a wide variety of input devices that are responsible Read More

Nowadays, most consumer electronic devices support the HDMI (High Definition Multimedia Interface) output for video and image downloads. Before HDMI became popular in the electronic industry, RCA connectors (yellow, white, and red cables) were primarily used to connect DVD players, video game consoles, and set top boxes to televisions or monitors. A common issue for consumers is converting their HDMI devices to RCA cable inputs in order for them to play on older television sets or monitors. How to Convert HDMI to RCA Step 1 – Search for an HDMI Read More

Ultra wideband is a unique type of wireless technology that uses an inconstant pulse transmission on a very wide bandwidth base to send a large amount of data over relatively small distances. UWB was originally developed for military communications and radar, but has since been declassified and become a developing consumer electronics technology. Specifically, ultra wideband is defined as pulsed communications that use a broadcast bandwidth of over 500 MHz, or 20% of the center frequency, and operates between 3.1 and 10.6 GHz at limited transmit powers. For the most Read More

Utorrent is a P2P file sharing software that allows users to share files via torrents. It is completely free and provides users with many different file sharing options, such as the ability to create a torrent or change the number of users who are able to connect to the computer at the same time. Utorrent differs from other P2P programs, such as Limewire and Ares, because users must obtain a torrent from a torrent database (e.g. IsoHunt or PirateBay) and place it within the Utorrent client rather than simply downloading Read More

The term wire gauge refers to a measurement of what the diameter of a wire is. This measure can then be used to determine what the electrical resistance, weight per unit of length, and the amount of current that can safely be carried by the wire. There are two internationally accepted measures for wire gauge, the Metric Wire Gauge (MWG) and American Wire Gauge (AWG) standards. American Wire Gauge (AWG) The standardized gauge system used for wire measurement in the United States and Canada is the AWG, or American Wire Read More