When an error message saying, “Network cable is unplugged” is displayed, it generally means that the computer can detect that there is an ASDL and/or Cable Connection pre-configured on the computer, but an Ethernet cable and/or a cable that is supposed to be plugged into the modem is unplugged. In the case that all of the cables are plugged in correctly but the error message is still displayed, there are three possible problems. Kinked Cable One of the cables may have a kink. The old cable will have to be Read More

Hydronic heating is when tubing that contains hot liquid is run beneath a home’s floor. It uses radiant heating to heat a structure. This technique has become more popular with families who want to live in an energy efficient home and want lower heating bills. Hydronic heating also allows homeowners to control the temperature by room or heating zone, which allows infrequently used rooms to be kept at a lower temperature than those used more often. How Does Hyrdonic Heating Work? Hydronic heating systems circulate hot water or other liquid Read More

Aspect Ratio is the ratio of a picture's width to its height. NTSC television uses a 4:3 aspect ratio. HDTV and SDTV feature a 16:9 aspect ratio. Movie theaters typically use an aspect ration of 1.85:1 or 2.35:1. Converting a movie to television requires either pan and scan or letterboxing. Pan and scan is a process where technicians remove portions of the left or right side of the video to convert the aspect ratio. Letterboxing is displaying the full picture in the center of the screen, with black bars above Read More

A SD Card (Secure Digital Card) is an IC (Integrated Circuit) which is stored in a compact and rugged plastic enclosure. SD Cards are designed to store data and to enable the transfer of data between devices equipped with SD Card slots. Current SD Card capacities range up to 1GB. A SD Card is 32mm long, 24mm wide, and 2.1mm thick. An even more compact format, the miniSD Card, is 20mm long, 21.5mm wide, and 1.4mm thick. The theoretical transfer speed of a SD 1.0 Card is 12.5MB/s. SD 1.1 Read More

Now that we have understood how to convert basic data types to class types and vice-versa, it is time to learn how to convert objects of one class type to another class type. The conversion between objects of different classes can be done using either a one-argument constructor or a conversion function. The choice depends upon whether the conversion routine has to be declared in the source class or in the destination class. To illustrate, consider a program that contains two classes: A and B. Also consider the statement: object_A Read More

Rotating a monitor screen has several practical uses. Having a “portrait” screen orientation allows viewers to see entire documents at 100% size and view taller web pages without the need to scroll as much. Additionally, rotated screens take up less space on a desk, especially if they are widescreen monitors. Note: Some monitors are not designed to be rotated (such as CRT Monitors). Therefore, users should determine whether their monitor can safely rotate without damage. It is not recommended that users physically turn any monitor that is not designed to Read More

When setting up your router,  the most important thing you need to do is access the router. You do this because you need to set up the security features and type of Internet connection. Therefore, getting into the router is very important. Accessing the router is like accessing any other website. First, you need to know the router’s default IP address. For example, it might be: 192.168.0.1, 192.168.1.1, etc. If you don’t know what your router’s local IP address is, read the manual and find it there. You can also Read More

The Active Directory database is logically separated into directory partitions: Schema partition Configuration partition Domain partition Application partition Each partition is a unit of replication and each partition has its own replication topology. Replication occurs between directory partition replicas. Minimum two directory partitions are common among all domain controllers in the same forest: the schema and configuration partitions. Additionally, all domain controllers that are in the same domain share a common domain partition. Schema Partition Only one schema partition exists per forest. The schema partition is stored on all domain Read More

3 dimensional, or 3D Graphics are a representation of an object displayed in three dimensions (length, depth and height). The creation of 3-D graphics can be divided into three phases. The first step, defines the shape of the object in a process called 3D modeling. The second step involves the placement and motion of the objects in a step called layout and animation, and the last step renders the final image of the object. 3D Modeling 3D modeling involves making the basic three-dimensional shape or wire frame of the objects. Read More

Multicast is the transfer of messages to multiple destinations simultaneously, using fewer networks. The information is delivered to each of the links only once, and copies are created when the links to the destinations split, thus creating an optimal distribution path. Multicasting reduces unnecessary packet duplication. A wireless network utilizes radio communication, unlike wired networks, which employ electrical conductors. Wireless multicasting can therefore be loosely defined as the process of multicasting over wireless networks. Multicast over wireless networks is a fundamental communication function as well as a challenging goal. The Read More