Binary operators can be overloaded in a similar manner as unary operators. We should note the following features of an operator function for a binary operator: It receives only one class type argument explicitly, in case of a member function. For a friend function, two class types are received as arguments. It returns a class type. Consider the following expression: C = A + B; The above expression contains three objects namely A, B and C of which A and B are the operands while C is the one to Read More

It is often seen in programming that variables of different data types are used in the same expressions e.g. float with integer or an integer with a double. In these cases, C++ automatically converts one data type to another as the situation demands. The data type to the right of the assignment operator is converted to the type of data to the left. For example, when assigning an int to a float, the int will be promoted to a float and then assigned. The type conversions are automatic as long Read More

War dialing, also called scanning, is dialing a large number of telephone numbers in the hope of finding anything interesting. Interesting items often include test tones, computers, Voice Mail Boxes (VMB's), Private Branch Exchanges (PBX's), and government offices. A common technique is to find one telephone number owned by a target and then to war dial the entire prefix which that number belongs to. For example, if your target is the Chinese embassy in Washington, D.C., you would dial every number starting with (202)328. That's ten thousand numbers. War dialing Read More

Do you do banking transactions online? When you transfer funds, pay bills or accept payments through the Internet, you may notice that some Websites and portals you may be using have web addresses that start with https://, which is different from the usual http://. You may wonder how could it be and why is such so. That is when the concept of HTTPS sets in. HTTPS is a technical acronym that stands for hypertext transfer protocol secure. As the name implies, it is the secure and safe version of the Read More

It is important to check regularly if a Linksys product has a new firmware update. Firmware updates are quite common in computer peripherals and devices and in many cases must be updated in order to run properly. However, before upgrading LinkSys firmware, it is important to understand what firmware is and why it should be updated once new versions are available. What is Firmware? Firmware is a type of computer program that is included in many computer devices. It should be noted that it is not categorized as solely software Read More

In the modern world of data and information, computer systems need circuits that are able to process and transfer that information. Because of this, a great deal of resources and innovation go into creating more advanced circuitry in order to increase data transfer rates and make computer systems smaller. This article will demonstrate how integrated circuits by explaining what they are and listing a number of programs that allow users to design their own integrated circuits. What is IC Design IC design, or integrated circuit design, is a specialized field Read More

Silicone grease is made when a thickener is combined with silicone oil in order to create a waterproof grease. The most common thickener used to make this grease is amorphousfumed silica with polydimethylsiloxane as the silicone oil. The resulting mixture is a translucent, viscous, white paste that has lubrication properties depending on the exact formula used to create the grease. Silicone grease has a wide range of uses in both the appliance and automotive industries. It is not suitable for applications that experience temperatures exceeding 300 degrees Fahrenheit because it Read More

SYSVOL is the acronym for the SYSFOL folder and all of the files stored in it on the Windows Operating System (OS). It stores the server’s copy of public data and files for the domain. These files consist of group or user policy information. The information stored in the SYSVOL folder is copied to all domain controllers on the respective domain. What are the SYSVOL Requirements? First, the SYSVOL folder has to be located on a Windows NTFS volume. The information stored in the SYSVOL folder is replicated on all Read More

The onboard Wii Hardware reads DVDs, DVD-R, DVD-RW discs, Wii game discs, and Nintendo GameCube formatted mini-DVDs. Unlocking the Wii’s DVD functionality is possible through various methods. Turning the Wii into a working DVD player is relatively simple and requires little technical work with the Wii depending on the method used to unlock the DVD functionality. Using Pre-Modded Chips Mod Chips are a special type of chip that must be installed onto the actual Wii hardware via soldering. The process can be complicated and requires many wires to solder into Read More

MGCP (Media Gateway Control Protocol) is a protocol used within a Voice over IP (VoIP) system. This internal protocol was primarily developed to address the demands of carrier-based IP telephone networks. MGCP is a complementary protocol for both H.323 and SIP, which was designed as an internal protocol between the Media Gateway Controller and the Media Gateway. In MGCP, an MGC primarily handles all the call processing by linking with the IP network through constant communications with an IP signaling device, for example an SIP Server or an H.323 gatekeeper. Read More