Forward and reverse channels refer to a number of frequencies that are used by a telecommunications broadcast system in order for a telephone tower and a cellular telephone to communicate with each other. A forward channel refers to the frequencies used by a telephone tower to communicate with all nearby cellular phones. Contrastingly, a reverse channel refers to the frequencies used by cellular telephones to communicate with a telephone tower.   How Forward and Reverse Channels Work While some companies may depend on different telephone systems, most rely on the Read More

A supercomputer is any machine that is is the most up to date and fastest computer available on the market, especially when it comes to its ability to handle calculations. In other words, they are at the frontline of processing capacity and are able to handle different calculations and processes that other computers would be unable to handle. A supercomputer's primary use is to handle tasks that are calculation-intensive. For example, calculations in quantum physics, molecular modeling and nuclear weapon detonation simulations would need a supercomputer. A category of tasks Read More

Step-by-Step Method for Thoroughly Cleaning a Keyboard Step One: Disconnect the keyboard from the computer and any other power source it may be plugged into. Step Two: Using an object that can create a small amount of leverage (such as your house key), remove the individual keys from your keyboard. Simply use the house key or other object to wedge underneath each key and gently pop them off of the keyboard. Step Three: Once all of the keys are removed from the keyboard, you can begin cleaning the keys by Read More

A fuel cell is a device that produces electrical energy through chemical reaction. This energy conversion process is known as electro-chemical energy conversion. The simplest form of electrochemical device that we use in our day to day life is a battery cell. A fuel cell is different from a battery cell in so far as reactants are constantly supplied to a fuel cell making it an open system whereas a battery cell is a closed system that stores the reactants within it. A fuel cell works as long as fuel Read More

Those who use Microsoft Internet Explorer may sometimes encounter an “IEXPLORE.EXE Application Error,” which causes the browser window to crash and become unusable. A variety of issues that may be activated upon configuration of the program or individual files on the hard disk often cause this. IEXPLORE.EXE Application Error Causes Since Internet Explorer is prone to errors, it is important to understand what is causing the application error in question. The following cause most common IEXPLORE.EXE application error messages: Browser Helper Objects – BHOs are additional software that are installed Read More

A lightning/surge arrester is a device that protects structures from electrical damage by intercepting lightning surges and diverting them to the ground. Lightning arresters are connected directly to the ground via low resistance cables, although they are generally mounted on high buildings or other structures in order to attract electricity. They can be used on land and in sea, with the latter version using the water to discharge electricity. Lightning arresters are available in many different forms and are used in a variety of applications. How to Design Lightning Arresters Read More

In comparison to the logical structure, which performs administrative tasks, the Active Directory physical structure checks when and where logon and replication traffic occurs. The physical structure of Active Directory contains all the physical subnets present in your network like domain controllers and replication between domain controllers. The physical structure of Active Directory: Domain Controllers: These computers run Microsoft Windows Server 2003/2000, and Active Directory. Every Domain Controller performs specific functions like replication, storage and authentication. It can support maximum one domain. It is always advised to have more than Read More

Sorting is the process of arranging elements in some logical order. Sorting methods are classified into the following categories: External sorting: This deals with sorting of data stored in external files. This method is used when the volume of data is very large and cannot be held in a computer’s RAM. Internal sorting: This deals with sorting of data held in the RAM of a computer. Sorting Methods The following are links to tutorials on some of the most popular sorting methods: Bubble sort Bucket sort Insertion sort Merge sort Read More

EEPROM stands for Electrically Erasable Programmable Read-Only Memory. An EEPROM is like an EPROM chip since it can be written in or programmed more than once. Unlike the EPROM chip, however, an EEPROM chip need not be taken out of the computer or electronic device of which it is part when a new program or data needs to be written on it. Selective programming can be done to an EEPROM chip. The user can alter the value of certain cells without needing to erase the programming on other cells. Thus, Read More

Tor is a program that is able to hide the user’s online activities from third parties and prevent websites from seeing where the user is browsing from by rerouting the user’s sent and recieved data through the Tor Network. The Tor Network is made up of hundreds of volunteers from around the world that specifically setup their Tor client as a relay station for other users. Tor does have its downsides, however, as it blocks a number of browser plugins and it must be specifically configured for each application that Read More