An Active X control can be defined as a small applet or software component that can be reused over and over again. These encapsulated software programs or applets can either be visual or non visual. They are easy to create and can be included in many applications that run on the Windows platform. For instance, if you have created an Access Database and would like to add more functionality to it, there are many different Active X Controls available. One control that is used widely in MS Access is the Read More

A microblog is, as the name suggests, a blog that is much smaller than a typical, traditional blog. It is not smaller in the number of hits that it receives, but instead, in the size of the individual blog posts. While a blog post on a traditional blog might be anywhere from 250-1000 words (some longer, some shorter), your typical microblog entry is a sentence or two. Sometimes, there are no words, but instead, a picture. In other words, a microblog is a site that publishes numerous short little entries Read More

LUN (Logical Unit Number) Masking is an authorization process that makes a LUN available to some hosts and unavailable to other hosts. LUN Masking is implemented primarily at the HBA (Host Bus Adapter) level. LUN Masking implemented at this level is vulnerable to any attack that compromises the HBA. Some storage controllers also support LUN Masking. LUN Masking is important because Windows based servers attempt to write volume labels to all available LUN’s. This can render the LUN’s unusable by other operating systems and can result in data loss. LUN Read More

First strip the jacket from the cable, being very careful not to cut into the individual conductors. It is wise to take a few practice tries to make sure you are not stripping too deep before you end up cutting too much off. The four twisted pairs. Next untwist the pair to make them workable. Try not to untwist to far as the twisting helps eliminate crosstalk and provides for a better quality cable. Next, arrange the eight conductors according the 568b wiring specifications. This next step can take some Read More

High-Speed Downlink Packet Access (HSDPA) is also known as High-Speed Downlink Protocol Access. HSDPA is a protocol for mobile telephones. It is a third-generation (3G) High-Speed Packet Access technology designed to speed up network capacity and data transmission rate of cellular phones. HSDPA is associated with various Universal Mobile Telecommunications System (UMTS) networks. These include the Global System for Mobile (GSM) Communications. Currently, HSDPA can support speeds ranging from 1.8 Mbps to 14.4 Mbps. While this is not very fast compared to various wired networks, it is a major milestone Read More

Pulse position modulation is a signal modulation technique that allows computers to share data by measuring the time each data packet takes to reach the computer. It is often used in optical communication, such as fiber optics, in which there is little multi-pathway interference. Pulse position modulation exclusively transfers digital signals and cannot be used with analog systems. It transfers simple data and is not effective at transferring files. How Pulse Position Modulation Works Pulse position modulation works by sending electrical, electromagnetic, or optical pulses to a computer or other Read More

The volt is the standard unit of voltage. It is defined as the electric potential difference required to move one ampere of current through a conductor with one ohm of resistance. According to Ohm's law, one watt of power is used, which is released as heat and warms the conductor. An analogy to voltage is water pressure. Water will only move between two points if there is a difference in pressure between them. A volt is basically a unit amount of extra force. History of the Volt The volt was Read More

Funcres.xla is a Microsoft Excel add-in that adds additional features to the software. Funcres.xla (Analysis Toolpak) includes 19 various features and a number of statistical functions that allow the user to correlate data and perform calculations that are not otherwise found in Microsoft Excel. However, Funcres.xla is included in most Microsoft Excel copies and the user must simply activate it in order to use it. If Funcres.xla is activated, it will be displayed when the user starts Microsoft Excel, which may confuse some users. Fortunately, Funcres.xla is not harmful and Read More

HRTF (Head Related Transfer Functions) refers to a technique used in audio recordings in order to produce binaural signals from a monaural source. While monaural signals refer to sounds that a signal source produces and both ears hear them at varying distances and frequencies, binaural signals refer to sounds that two separate sources produce and that each ear hears at the same distance and frequency. Stereo systems often produce monaural sounds while earphones produce binaural sounds. How HRTF Works HRTF algorithms rely on four principles: distance, azimuth, elevation, and frequency. Distance refers to how Read More

Like class templates, we can also define function templates that could be used to create a family of functions with different argument types. The general format of a function template is as follows: template <class T> return-type function-name( argument of type T ) { // body of function with Type T } The function template syntax is similar to that of the class template except that we are defining functions instead of classes. We must use the template parameter T as and when necessary in the function body and in Read More