An LNBF (Low Noise Block-Down Feedhorn) Converter is a type of satellite dish that is used for satellite television and Internet access. It includes a device known as a feedhorn that is responsible for collecting radio signals reflected off of a parabolic dish. LNBFs are the most common form of LNBs and are necessary in order for subscribers to receive high speed Internet and television services via satellite. How LNBF Works LNBFs work in the same way that all other satellite receivers work, consisting of a parabolic dish attached to Read More

Many of us, whether individuals, businesses, or organizations, have various projects that need to get done accurately and on time. In order to do this without wasting time and effort, program designers have invented project management software to help us sort out goals, expenses, and to-do lists. In this article, we will go over project management software, how it works, and a number of free project management programs available on the Internet. What is Project Management Software Project management software allows you to sort out your goals, expenses, to-do lists, Read More

As many people are fed up with their cell phone providers, a new trend has opened up for tracphones. A tracphone, or TracFone, is a prepaid phone that gives you the accessibility of a contract plan without the commitment. Tracphones have become much more popular in the past few months as more people are finally ending their two year contracts with their cell phone providers and switching to prepaid plans. To properly define how tracphones can help you, this article will analyze the various features that tracphones have to offer. Read More

A buffer overflow occurs when a computer application attempts to assign data to a data structure past the point that the structure is designed to store information. In the classic case, a buffer is a sequential memory section that is assigned to contain information. The type of information can vary from an array of integers to objects. When information is stored outside the allocated block of memory, the program can crash or computer malware can infect it. Why are Buffer Overflows Dangerous? Buffer overflows are best known from the software Read More

Sand is a sedimentary material; loose grains of worn out and disintegrated rocks. Sand is of fine granules with grains ranging between 0.06 and 2.0 mm in diameter. Sand is a naturally occurring fragmented material comprised of tiny particles of decomposed rocks, shells, or corals. So how does sand come about? As mentioned before, nature takes it course to form sand, but there are also unnatural ways to form sand. Naturally Occurring Sand The most common natural process of sand formation is called weathering. Majority of sand comes from chemical Read More

List Logged In Unix Users Unix has many commands to list users who are logged in. These commands include ‘w,’ ‘who,’ and ‘users:’ $ w 9:51PM up 99 days, 5:39, 2 users, load averages: 0.83, 0.90, 0.90 USER TTY FROM LOGIN@ IDLE WHAT will p0 c-66-164-235-73. 8:11AM – w spencer p3 c-66-164-235-73. 8:26PM 1:24 pine $ who will ttyp0 Jul 26 08:11 (66.164.235.73) spencer ttyp3 Jul 26 20:26 (66.164.235.73) $ users spencer will List All Unix Users To list all users on a Unix system, even the ones who are Read More

Thermal grease cools electrical components and is sometimes referred to as thermal paste. It is most commonly used on computer processors in order to help with the CPU’s heat transfer process, which prevents the computer from overheating. It is a durable and thick substance and is also applied to heat sinks in other electronic equipment, including fans and video card processors. How is Thermal Grease Made? Thermal grease is made from mineral fluid or a silicone base that is mixed with metal oxide fillers. It has high thermal conductivity and Read More

A Unix script is a program which is written in a programming language built into one of the Unix shells. If you can type commands into the Unix shell, you can write a shell script. A shell script can be as simple as a text file containing a list of commands. Let’s say that you frequently FTP to the server ftp.ox.ac.uk. You could create a Unix script called “ox” to FTP to that server automatically. This would save you typing everytime you connected. Your simple Unix script could contain just Read More

  As computers broke out of the dawning period and become more popular, computer programmers worldwide needed a universal standard to create and control documents. What they chose was HTML, or Hypertext Markup Language, a programming language that isn’t so much of a language as it is an alphabet. All other programming languages are based on HTML which means if you want to learn programming, you must first learn HTML. In this article, we will go over what HTML is and how it works, how HTML came to be, dynamic Read More

An op-amp (operational amplifier) circuit is a device that amplifies the difference between two or more input voltages. Op-amp circuits are the most widely used electronic devices in the world due to their integration in a wide variety of electronic goods. There are many op-amp circuit variations available and several types of differential amplifiers that are made by using several op-amps together. How Op Amp Circuits Work Op-amp circuits take a voltage from two or more inputs, amplify it, and usually feed it back to the voltage source. Op-amp circuits Read More