ODU (Out-Door Unit) refers to the set of satellite equipment which is placed outside of the building. The ODU typically includes a satellite dish, a feedhorn, and a LNB (Low Noise Block). In bi-directional satellite systems, the ODU will also include a BUC (Block Up Convertor). The ODU is connected to the IDU (In-Door-Unit) by …
The SSID (Service Set IDentifier) is a name that identifies a specific 802.11 wireless network. The name is set by the network administrator who configures the router. Some vendors refer to the SSID simply as the “network name.” The SSID is the name of the wireless network and should not be confused with the host …
Electromagnets are magnets whose magnetic properties come from or are generated through electricity. A magnet is a material (this is usually metal), which has at least one pair of negative and positive poles. These opposite poles' attraction produces a magnetic field. This gives the magnet the ability to 'attract' metals such as iron or steel. …
Data types in the Java programming language are basically divided into two groups – primitive data types and object references. A primitive data type is a basic building block and has full built-in support. Many other languages also support composite data types, which are build on a combination of primitive data types and may or …
The SMA (SubMiniature Type A) connector is a type of the radio frequency connector developed in the 1960s to make it easier to connect coaxial cables. Using a screw-type design instead of the common ‘push-pull’ system, the SMA connector allows for a quick connection; and can be used in both alternating and direct current applications. …
SQL Tutorials Our SQL Tutorials section will guide you on how to use SQL to access database systems. SQL is an acronym for Structured Query Language, which is a language used to access or manipulate a database or database systems. Introduction to SQL This is a an introductory guide to SQL. This will tell you …
Many people in the multimedia industry informally refer to the Windows Media File format as the VC-1 format. Its formal name is the SMPTE 421 M standard. Microsoft initially released it in the spring of 2006 and it is widely supported on DVD players, Windows Media Player 9 and newer, and Blu-ray. WVC1 is the …
Electrosurgery is the the term used when high-frequency electrical current is used to cut, fulgurate, desiccate, or coagulate tissue with very little blood loss during surgery. The Harmonic scalpel is one of two competing brands in this field that help increase a surgeon’s efficiency and reduce the overall recovery time for patients. The device consists …
Spam can be described as the unwanted mail. The most common type of spam is e-mail spam. Spam mostly includes product and service advertisements. Certain spam mails contain malicious content and/or viruses or may direct users to websites which contain viruses. Some spam messages may also be part of identity theft scams or phishing scams. …
DNS Queries Overview The naming system used by DNS is a hierarchical namespace, called the DNS namespace. The DNS namespace has a unique root. The root can contain numerous subdomains. Each subdomain also can contain multiple subdomains. Each domain registered in DNS is connected to a DNS name server. The DNS server of a domain …