The Internet is vast and filled with many different dangers for people of all ages. There is really no set age where someone can be completely safe from online dangers. There are several ways to protect children, adults, and the elderly from falling victim to dangers online. How to Keep Kids Safe on the Internet Children who have access to the Internet must be monitored at all times. There are several different things that children can be exposed to online (sometimes from simply misspelling a domain name). Children can be Read More

 Free-To-Air, or FTA, channels are satellite television channels that are not encrypted and are, therefore, available to anyone who is able to receive them. FTA channels are not provided by premium satellite companies, but rather open source satellite providers, such as Galaxy, AMC, and Telstar. FTA channels require subscribers to have a 30-inch satellite dish or larger, but do not require the user to pay any monthly fees or access charges. FTA channels are available from a variety of different satellites around the world, but may change in terms of Read More

The best way to choose keywords for your site is to think about what prospective customers would type in if they were looking for your product or service. Sometimes our creativity needs a little boost. The Overture Search Term Suggestion Tool, Wordtracker, and the Google AdWords Keyword Tool can be that boost. These tools will help you to discover which search terms web surfers are really using. Wordtracker Overture Search Term Suggestion Tool Google AdWords Keyword Tool The Digital Point Keyword Suggestion Tool is a front-end which combines both the Read More

There are many ways to measure sound quality. Many measurements have been created to specifically measure and rate the quality of sound. Here are a few of the most common types of measurements used for sound quality. THD THD stands for Total Harmonic Distortion. It is a measurement taken to view the total amount of distortion from the original audio signal at playback. Most quality components have less than 1% distortion rate, loudspeakers can have 1 to 5% distortion rate and bass subwoofers can produce the most distortion sometimes approaching Read More

Most versions of Unix use different run levels to define different operational and security states of the Unix system. The `init` command is used to change the run level. Other commands which change the run level include reboot, halt, and shutdown. RedHat Linux Run Levels Run Level Description 0 Halt 1 Single user mode 2 Multiuser, without NFS 3 Full multiuser mode 4 Unused 5 X11 6 Reboot Solaris Run Levels Run Level Description 0 PROM mode. It is used to bring a running system to the OK prompt, either Read More

The ntdll.dll file is a Microsoft dynamic link library file that contains the NT kernel functions for a computer running the Windows Operating System (OS). The file is normally found in the windowssystem32 or the winntsystem32 directories. Windows computer users may come across the “Unknown Hard Drive Ntdll.dll Error” message. A corrupted or damaged ntdll.dll file (a computer/Trojan virus is usually the cause), corrupted driver files, or software update issues with the kernel file causes this. The file should not be deleted as it is a critical Windows operating system Read More

CPUs process data using instructions stored in the computer memory or RAM. The RAM is a temporary storage area that makes information and instructions available to the microprocessor, which does not have to use this information until required. The two processor classifications are the Reduced Instruction Set Computer (RISC) and the Complex Instruction Set Computer (CISC). The primary difference between the two is that a RISC-based chip uses more basic instruction sets to achieve a greater clock frequency to process more information per clock cycle than a CISC processor. CISC-based Read More

Rail guns are weapons that use electrical current instead of gunpowder to propel their projectiles. A projectile is any object thrust into accelerated motion with the influence of force. Projectiles in motion can be propelled by pushes, pulls or, in some cases, both push and pull. The armaments and weapons industry's continuous development has had a great role in the scientific quest for the perfect object propulsion. One technology has been very promising through the years and has shown time and again to be the future of weapons manufacture: the Read More

In addition to social networking, Facebook provides users with many ways to entertain themselves while connecting with friends. One of these methods is Facebook Games, a collection of applications that third party companies that make money from in-game money, advertising, and publicity provide. Several of Facebook Game’s most popular applications are outlined below.   Mafia Wars One of Facebook Game’s oldest and most popular applications, Mafia Wars, allows users to create their own mafia and compete against other players to become the strongest mafia on Facebook. Mafia Wars allows users Read More

Call back security, also known as dial back security, is a security mechanism used to authenticate users over dialup lines. The way call back security works is the dialup user calls into the system and enters his username and password. The system then hangs up on the user and calls the user back at a preconfigured number. Call back security can sometimes be defeated using this technique: Configure your modem to auto-answer. On Hayes-compatible modems, the command to do this is ATS0=1. Dial the remote system. When the remote system Read More