The Invisible Mode of Yahoo Messenger allows users to appear offline. While actually being offline prevents the user from communicating with his/her friends, Invisible Mode allows the user to still IM and send files to other users while appearing offline to everyone else. When communicating with friends in Invisible Mode, the user’s friend will still receive a message stating that the user is offline and receive messages when he/she signs in. However, the user will receive the message as it is sent.   How To Enable Invisible Mode Yahoo users Read More

An Android is a smartphone that Google produced that allows users to communicate with their friends, relatives, and co-workers via calls and text messaging, Internet access, and a built-in email client. The Android also features a camera, task management software, and a wide variety of applications that users can take advantage of. Additionally, the Android includes a complete mobile operating system and a browser for accessing the Internet. While the Android’s default web browser is Android 2.2, users have the option to download and install any mobile browser they choose. Read More

The transport layer is the fourth layer of the OSI Model and exists between the Session Layer and Network Layer. The transport layer is used to actually transfer data from one application to another and can be used to stream data from one device to another. The most popular transport layer, the Transmission Control Protocol, is the foundation for Internet access all over the world.   How The Transport Layer Works The transport layer receives information from the session layer, which keeps track of the user’s identification and personal settings, Read More

A stack that dynamically allocates memory for each of its elements (just like a linked list) is also known as a linked stack. The array-based representation of a stack suffers from the following limitations. The size of the stack must be known in advance. We may come across a situation when we need to push more elements in the stack, but cannot do so because we’ve reached the maximum size. However, a stack is an abstract data structure and should not become full. Hence, abstractly, it is always possible to Read More

A network router is a network device with interfaces in multiple networks whose task is to copy packets from one network to another. Routers operate at Layer 3 of the OSI Model, the Network Layer. This is in contrast to switches, which operate at Layer 2 of the OSI Model, the Data-Link Layer. A network router will typically utilize one or more routing protocols, such as RIP, OSPF, or BGP. Routers also accept routes which are configured manually by a network administrator. Those routes are called static routes. The router Read More

Unary operators are the ones that operate on one operand, one such operator is the unary minus (-) operator which is used to change the sign of the operand it acts upon. This operator works well with basic data types such as int, float, etc.. In this section we will see how to overload this operator so that it can work the same way for user defined data types as it does for basic data types, i.e. change the sign of the operand. The unary minus operator function does not Read More

A spark-gap transmitter is a mechanism for producing radio signals. It has been the primary radio transmission device during the early years of radio technology. It was soon superseded by other transmitters due to its discontinuous radio wave production and widely varying frequencies. How a Spark-Grap Transmitter Works A spark gap transmitter is basically composed of two capacitors (electrical apparatus designed to store electrical energy). However, the switch that ultimately forms the connection between the two capacitors is ionized gas (the air gap) that facilitates the passage of an oscillating Read More

Adobe Premiere Tutorials The Adobe Premiere is a web development application that has a very stable user base. It is commonly used for editing situations by both amateur enthusiasts and professionals. This section has information about Adobe Premiere Pro and its usage. It comes with the basic information, how tos, so you can work with the application and properly use it. This tutorial has all the basic resources that will show you how to perform basic tasks and functions, special effects, etc. in Adobe Premiere Pro. 4-Split Screen Tutorial If you Read More

A protocol is a collection of specifications or rules for data packets that enable information to be sent over the network. Network protocols are designed for network communication. In order to understand the different protocols available and their efficiencies, lets first look at the Open Systems Interconnection (OSI) reference model. This is the standard model for network communication developed by International Organization for Standardization (ISO). The design of the OSI model is that of a stack of protocols. The different stacks of protocols operate together to transport data and enable Read More

A dual layer DVD is a disc that has two or more layers that can be written to, as opposed to traditional DVDs that only have a single layer. Dual layer DVDs are identical to regular DVDs in every way, except that they store much more information. However, dual layer DVDs require equipment that are specifically designed for them in order to be read or written to.   How Dual Layer DVDs Work A single layer DVD consists of a layer of heat sensitive organic dye that permanently changes shape Read More