CLICKBET88.COM AGEN BOLA TERPERCAYA UNTUK PIALA EURO 2012

CLICKBET88.COM agen bola terpercaya untuk piala EURO 2012 ikut menyemarakan untuk menjadi sebuah pemenang yang ingin mencoba peruntungan anda saat menonton PIALA EURO 2012.
Piala euro 2012 merupakan acara yang sangat dinanti-nanti oleh pecinta sepakbola dunia. Ajang ini menjadi tontonan yang sangat spektakuler karena sebanyak 16 negara terbaik Eropa akan unjuk kekuatan menjadi tim terakhir yang mengangkat trofi Henry Delaunay pada 1 Juli 2012. Piala Euro 2012 merupakan acara ke-14 yang diselengarakan oleh UEFA yang akan menyemarakkan pesta bola di benua eropa ini.

Sepakbola sendiri merupakan olahraga yang sangat diminati oleh hampir seluruh kalangan pria bahkan wanita juga ada yang suka dengan olehraga tersebut. Berbagai ajang turnamen sepakbola diselenggarakan baik tingkat kecil hingga sebesar-besar nya. Seperti liga antar desa, antar daerah, organisasi, piala antar benua asia, piala antar benua spanyol, piala antar benua affrika, piala EURO 2012 bahkan piala dunia dan berbagai macam jenis turnamen sepakbola yang ada.

Jika kita melihat sejarah, olahraga sepak bola dimulai sejak abad ke-2 dan -3 sebelum Masehi di Cina. Di masa Dinasti Han tersebut, masyarakat menggiring bola kulit dengan menendangnya ke jaring kecil. Permainan serupa juga dimainkan di Jepang dengan sebutan Kemari. Di Italia, permainan menendang dan membawa bola juga digemari terutama mulai abad ke-16.

CLICKBET88.COM AGEN BOLA TERPERCAYA UNTUK PIALA EURO 2012

Kejuaraan Sepak Bola Eropa UEFA atau nama bahasa Inggrisnya UEFA European Football Championship adalah kejuaraan sepak bola terbesar antar negara-negara UEFA. Diadakan setiap empat tahun sekali sejak 1960, kejuaraan ini awalnya dinamakan Piala Negara-negara Eropa (European Nations Cup), kemudian berganti menjadi Kejuaraan Sepak Bola Eropa (European Football Championship) pada 1968. Saat ini sudah sampai pada piala yang cukup bergengsi dan CLICKBET88.COM agen bola terpercaya untuk piala EURO 2012.

Tahun terus berganti dan Piala EURO terus saja berlangsung, pada saat memasuki tahun 1976 hanya empat tim yang melaju ke turnamen babak final. Setiap Piala EURO semakin bertambah pula tim yang ikut menguji keberanian untuk memperbeutkan Piala EURO, pada tahun 1980 delapan tim yang kemudian tetap bertahan hingga tahun 1996.

Pada tahun 1996 tim yang mencoba memperbutkan PIALA EURO 2012 bertambah dua kali lipat dari tim sebelumnya hingga mencapai enam belas tim bermain di turnamen ini.

Tim-tim Piala EURO  tersebut dipilih melalui rangkaian pertandingan kualifikasi: pada tahun 1960 dan 1964 melalui play-off home and away (pertandingan di kandang dan tandang); sejak 1968 melalui liga kualifikasi dan juga pertandingan play-off. Tuan rumah terpilih secara langsung. Saat ini Jerman merupakan yang terbanyak mendapat juara sebanyak 3 kali pada tahun 1972, 1980, dan 1996.


Piala dunia juga tak lepas dari sebuah dukungan masyarakat dan dunia hingga terbentuknya Piala dunia, begitu juga piala EURO 2012 kali ini. Jika anda memiliki team yang anda kagumi anda tentu tidak akan melewatkan tontonan ini hingga acara PIALA EURO 2012 tidak terlewatkan sedikitpun. Ingat kembali bahwa CLICKBET88.COM agen bola terpercaya untuk piala EURO 2012.

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Sebagai agen bola sbobet,  CLICKBET88.COM yang memberikan dukungan pesta piala EURO 2012 tahun ini. Mari kita juga tidak melwatkan acara ini dengan penuh semangat dan tidak lupa bahwa CLICKBET88.COM agen bola terpercaya untuk piala EURO 2012.

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Computer Network

What do you know about computer networking? well here we will discuss a little about the existing computer networks so far. At its base, computer network  consists  of two parts, is:

Wired technologies

• Twisted pair wire is the most widely used medium for telecommunication. Twisted-pair cabling consist of copper wires that are twisted into pairs. Ordinary telephone wires consist of two insulated copper wires twisted into pairs. Computer networking cabling consist of 4 pairs of copper cabling that can be utilized for both voice and data transmission. The use of two wires twisted together helps to reduce crosstalk and electromagnetic induction. The transmission speed ranges from 2 million bits per second to 100 million bits per second. Twisted pair cabling comes in two forms which are Unshielded Twisted Pair (UTP) and Shielded twisted-pair (STP) which are rated in categories which are manufactured in different increments for various scenarios.

•  Coaxial cable is widely used for cable television systems, office buildings, and other work-sites for local area networks. The cables consist of copper or aluminum wire wrapped with insulating layer typically of a flexible material with a high dielectric constant, all of which are surrounded by a conductive layer. The layers of insulation help minimize interference and distortion. Transmission speed range from 200 million to more than 500 million bits per second.

• Optical fiber cable consists of one or more filaments of glass fiber wrapped in protective layers that carries a data by means of pulses of light. It transmits light which can travel over extended distances. Fiber-optic cables are not affected by electromagnetic radiation. Transmission speed may reach trillions of bits per second. The transmission speed of fiber optics is hundreds of times faster than for coaxial cables and thousands of times faster than a twisted-pair wire. A recent innovation in fiber-optic cable is the use of colored light. Instead of carrying one message in a stream of white light impulses, this technology can carry multiple signals in a single strand.

Wireless technologies

• Terrestrial microwave – Terrestrial microwaves use Earth-based transmitter and receiver. The equipment looks similar to satellite dishes. Terrestrial microwaves use low-gigahertz range, which limits all communications to line-of-sight. Path between relay stations spaced approx, 48 km (30 miles) apart. Microwave antennas are usually placed on top of buildings, towers, hills, and mountain peaks.

• Communications satellites – The satellites use microwave radio as their telecommunications medium which are not deflected by the Earth's atmosphere. The satellites are stationed in space, typically 35,400 km (22,200 miles) (for geosynchronous satellites) above the equator. These Earth-orbiting systems are capable of receiving and relaying voice, data, and TV signals.

• Cellular and PCS systems – Use several radio communications technologies. The systems are divided to different geographic areas. Each area has a low-power transmitter or radio relay antenna device to relay calls from one area to the next area.

• Wireless LANs – Wireless local area network use a high-frequency radio technology similar to digital cellular and a low-frequency radio technology. Wireless LANs use spread spectrum technology to enable communication between multiple devices in a limited area. An example of open-standards wireless radio-wave technology is IEEE.

• Infrared communication , which can transmit signals between devices within small distances not more than 10 meters peer to peer or ( face to face ) without any body in the line of transmitting.

There is little that can we submit, may be sustainable in his next article. We are corrections from readers.

Operating system vulnerability to viruses

Not much different from the human body which sometimes susceptible to disease due to no body's defense against attack. This is of special concern in the 1990s, when Microsoft gain market dominance in desktop operating systems and office suites. Users of Microsoft software (especially networking software such as Microsoft Outlook and Internet Explorer) is vulnerable to the spread of the virus. Microsoft software is targeted by virus writers because of their desktop dominance, and is often criticized for including many errors and holes for virus writers to exploit. Integrated and non-integrated Microsoft applications (like Microsoft Office) and applications with scripting languages with access to the system files (such as Visual Basic Script (VBS), and applications with networking features) are also very vulnerable. 

Although Windows is by far the most popular operating system is the target for virus writers, viruses also exist on other platforms. Any operating system that allows third parties to run the program can theoretically run viruses. Some operating systems more secure than others. Unix-based operating system (and NTFS-aware applications on Windows NT-based platforms) only allow users to run executables within their own protected memory space. 

Internet-based experiments revealed that there are cases when people are willing to press a certain button to download a virus. Security analyst Didier Stevens ran a half-year campaign on Google AdWords ads that say "Is your PC virus-free Get it? Infected in here!". The result is 409 clicks. 

In 2006, there were relatively few security exploits targeting Mac OS X (with Unix-based file system and kernel). Total viruses for Apple's operating system older, known as Mac OS Classic, varies from source to source, with Apple stating that there are only four known viruses, and independent sources stating there were 63 viruses. Many Mac OS Classic viruses targeted HyperCard authoring environment. Virus susceptibility difference between Mac and Windows is a chief selling point, one of which Apple used in their Get a Mac ad. In January 2009, Symantec announced the discovery of a trojan that targets the Mac. This discovery does not get the coverage that is until April 2009. 

Meanwhile, Linux, and Unix in general, always native blocked normal users from having access to make changes to the operating system environment, Windows users generally do not. These differences continue in part because of the widespread use of an administrator account in contemporary versions like XP. In 1997, when a virus for Linux was released - known as "Bliss" - leading antivirus vendors issued warnings that Unix-like system can be a victim of the same viruses as Windows. Bliss virus may be considered characteristic of viruses - as opposed to worms - on Unix systems. Bliss requires that the user run it explicitly, and can only infect programs that the user has access to modify. Unlike Windows users, most Unix users do not login as an administrator user except to install or configure software; as a result, even if the user ran the virus, it could not harm their operating system. Bliss virus never became widespread, and remains mainly curiosity research. Its creator later posted the source code to Usenet, enabling the researchers to see how it works.

Computer Virus Infection Strategy

In copies of itself to grow in your computer, the virus should be possible to execute code and write code into memory. For this reason, many viruses attach to executable files that can be part of legitimate programs. If a user tries to launch a program that is infected, the virus code can be run simultaneously. Viruses can be divided into two types according to their behavior when they run. non-resident viruses immediately search for other computers that may be infected, infect these targets, then transfer control to the program an infected application. Resident viruses do not search for hosts when they started. Instead, you load the memory resident virus in the execution and transfer control to host program. The virus remains active in the background and infects new hosts when files are accessed from another program or operating system itself. 

Non-resident viruses 
Non-resident viruses can be considered as composed of modules and module finder replication. Finder module is responsible for finding new files to infect. For each new executable file finder module meeting, she calls the replication module to infect files. 


Resident viruses
Resident viruses contain a replication module which is similar to what is used by the virus overseas. This module, however, is called a finder module. The cost in the form of virus replication in memory when running, however, and ensuring that this module runs every time you call the operating system to perform certain operations.Replication module can be called, for example, each time the operating system executing file. In this case, the virus infects all the right programs running on your computer. 


Resident viruses are sometimes divided into the category of fast infectors and a category slow infectors. Fast infectors are designed to infect as many files as possible. A fast infector, for instance, can infect every potential host file that is accessed. This poses a particular problem when using anti-virus software as a virus scanner will have access to all files that have the potential to accommodate the computer when you run the analysis at the system level. If the virus does not realize that this virus is present in memory, the virus can "piggy-back" on the virus scanner and in this way infect all files that were analyzed. Fast infectors rely on fasting levels of the spread of infection. 


The disadvantage of this method is that infecting many files may make detection more likely, because the virus can slow down your computer or perform many suspicious actions that can be seen from anti-virus software. Slow infectors, on the other hand, are designed to infect hosts infrequently. Some slow infectious agent, for example, only infect files when they are copied. Slow infectors are designed to avoid detection by limiting their actions: this is less likely to reduce significantly the computer and at best, often trigger anti-virus software that detects suspicious behavior in the program. Slow infector approach, however, does not seem right.

ref: wikipedia.org

Computer Programmer

A programmer is someone who writes computer software. The term computer programmer can refer to a specialist in one area of computer programming or to a generalist who writes code for many kinds of software. One who practices or professes a formal approach to programming may also be known as a programmer analyst. A programmer's primary computer language (Lisp, Java, Delphi, C++, etc.) is often prefixed to the above titles, and those who work in a web environment often prefix their titles with web. The term programmer can be used to refer to a software developer, software engineer, computer scientist, or software analyst. However, members of these professions typically possess other software engineering skills, beyond programming; for this reason, the term programmer is sometimes considered an insulting or derogatory oversimplification of these other professions. This has sparked much debate amongst developers, analysts, computer scientists, programmers, and outsiders who continue to be puzzled at the subtle differences in these occupations.
Those proficient in computer programming skills may become famous, though this regard is normally limited to software engineering circles. Ada Lovelace is popularly credited as history's first programmer. She was the first to express an algorithm intended for implementation on a computer, Charles Babbage's analytical engine, in October 1842. Her work never ran, though that of Konrad Zuse did in 1941. The ENIAC programming team, consisting of Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Wescoff, Fran Bilas and Ruth Lichterman were the first working programmers.
International Programmers' Day is celebrated annually on January 7.
Nature of the work
Computer programmers write, test, debug, and maintain the detailed instructions, called computer programs, that computers must follow to perform their functions. Programmers also conceive, design, and test logical structures for solving problems by computer. Many technical innovations in programming — advanced computing technologies and sophisticated new languages and programming tools — have redefined the role of a programmer and elevated much of the programming work done today. Job titles and descriptions may vary, depending on the organization.
Programmers work in many settings, including corporate information technology departments, big software companies, and small service firms. Many professional programmers also work for consulting companies at client' sites as contractors. Licensing is not typically required to work as a programmer, although professional certifications are commonly held by programmers. Programming is widely considered a profession (although some authorities disagree on the grounds that only careers with legal licensing requirements count as a profession).
Programmers' work varies widely depending on the type of business they are writing programs for. For example, the instructions involved in updating financial records are very different from those required to duplicate conditions on an aircraft for pilots training in a flight simulator. Although simple programs can be written in a few hours, programs that use complex mathematical formulas whose solutions can only be approximated or that draw data from many existing systems may require more than a year of work. In most cases, several programmers work together as a team under a senior programmer’s supervision.
Programmers write programs according to the specifications determined primarily by more senior programmers and by systems analysts. After the design process is complete, it is the job of the programmer to convert that design into a logical series of instructions that the computer can follow. The programmer codes these instructions in one of many programming languages. Different programming languages are used depending on the purpose of the program. COBOL, for example, is commonly used for business applications which are run on mainframe and midrange computers, whereas Fortran is used in science and engineering. C++ is widely used for both scientific and business applications. Java, C# and PHP are popular programming languages for Web and business applications. Programmers generally know more than one programming language and, because many languages are similar, they often can learn new languages relatively easily. In practice, programmers often are referred to by the language they know, e.g. as Java programmers, or by the type of function they perform or environment in which they work: for example, database programmers, mainframe programmers, or Web developers.
When making changes to the source code that programs are made up of, programmers need to make other programmers aware of the task that the routine is to perform. They do this by inserting comments in the source code so that others can understand the program more easily. To save work, programmers often use libraries of basic code that can be modified or customized for a specific application. This approach yields more reliable and consistent programs and increases programmers' productivity by eliminating some routine steps.

Testing and debugging

Programmers test a program by running it and looking for bugs. As they are identified, the programmer usually makes the appropriate corrections, then rechecks the program until an acceptably low level and severity of bugs remain. This process is called testing and debugging. These are important parts of every programmer's job. Programmers may continue to fix these problems throughout the life of a program. Updating, repairing, modifying, and expanding existing programs sometimes called maintenance programmer. Programmers may contribute to user guides and online help, or they may work with technical writers to do such work.
Certain scenarios or execution paths may be difficult to test, in which case the programmer may elect to test by inspection which involves a human inspecting the code on the relevant execution path, perhaps hand executing the code. Test by inspection is also sometimes used as a euphemism for inadequate testing. It may be difficult to properly assess whether the term is being used euphemistically.
Application versus system programming
Computer programmers often are grouped into two broad types: application programmers and systems programmers. Application programmers write programs to handle a specific job, such as a program to track inventory within an organization. They also may revise existing packaged software or customize generic applications which are frequently purchased from independent software vendors. Systems programmers, in contrast, write programs to maintain and control computer systems software, such as operating systems and database management systems. These workers make changes in the instructions that determine how the network, workstations, and CPU of the system handle the various jobs they have been given and how they communicate with peripheral equipment such as printers and disk drives.

 Types of software

Programmers in software development companies may work directly with experts from various fields to create software — either programs designed for specific clients or packaged software for general use — ranging from computer and video games to educational software to programs for desktop publishing and financial planning. Programming of packaged software constitutes one of the most rapidly growing segments of the computer services industry.
In some organizations, particularly small ones, workers commonly known as programmer analysts are responsible for both the systems analysis and the actual programming work. The transition from a mainframe environment to one that is based primarily on personal computers (PCs) has blurred the once rigid distinction between the programmer and the user. Increasingly, adept end users are taking over many of the tasks previously performed by programmers. For example, the growing use of packaged software, such as spreadsheet and database management software packages, allows users to write simple programs to access data and perform calculations.
In addition, the rise of the Internet has made Web development a huge part of the programming field. More and more software applications nowadays are Web applications that can be used by anyone with a Web browser. Examples of such applications include the Google search service, the Hotmail e-mail service, and the Flickr photo-sharing service.

What is Program....

An organized list of instructions that, when executed, causes the computer to behave in a predetermined manner. Without programs, computers are useless.

A program is like a recipe. It contains a list of ingredients (called variables) and a list of directions (called statements) that tell the computer what to do with the variables. The variables can represent numeric data, text, or graphical images.

There are many programming languages -- C, C++, Pascal, BASIC, Java, FORTRAN, COBOL, and LISP are just a few. These are all high-level languages. One can also write programs in low-level languages called assembly languages, although this is more difficult. Low-level languages are closer to the language used by a computer, while high-level languages are closer to human languages.

Eventually, every program must be translated into a machine language that the computer can understand. This translation is performed by compilers, interpreters, and assemblers.

When you buy software, you normally buy an executable version of a program. This means that the program is already in machine language -- it has already been compiled and assembled and is ready to execute.

Various forms of Monitors

Cathode Ray Tube

Definitions

• A cathode is a terminal or electrode at which electrons enter a system, such as an electrolytic cell or an electron tube.
• A cathode ray is a stream of electrons leaving the negative electrode, or cathode, in a discharge tube (an electron tube that contains gas or vapor at low pressure), or emitted by a heated filament in certain electron tubes.
• A vacuum tube is an electron tube consisting of a sealed glass or metal enclosure from which the air has been withdrawn.
• A cathode ray tube or CRT is a specialized vacuum tube in which images are produced when an electron beam strikes a phosphorescent surface.

Besides television sets, cathode ray tubes are used in computer monitors, automated teller machines, video game machines, video cameras, oscilloscopes and radar displays.

The first cathode ray tube scanning device was invented by the German scientist Karl Ferdinand Braun in 1897. Braun introduced a CRT with a fluorescent screen, known as the cathode ray oscilloscope. The screen would emit a visible light when struck by a beam of electrons.

In 1907, the Russian scientist Boris Rosing (who worked with Vladimir Zworykin) used a CRT in the receiver of a television system that at the camera end made use of mirror-drum scanning. Rosing transmitted crude geometrical patterns onto the television screen and was the first inventor to do so using a CRT.

Modern phosphor screens using multiple beams of electrons have allowed CRTs to display millions of colors.

LCD

Liquid crystal display (LCD) is a thin, flat panel used for electronically displaying information such as text, images, and moving pictures. Its uses include monitors for computers, televisions, instrument panels, and other devices ranging from aircraft cockpit displays, to every-day consumer devices such as video players, gaming devices, clocks, watches, calculators, and telephones. Among its major features are its lightweight construction, its portability, and its ability to be produced in much larger screen sizes than are practical for the construction of cathode ray tube (CRT) display technology. Its low electrical power consumption enables it to be used in battery-powered electronic equipment. It is an electronically-modulated optical device made up of any number of pixels filled with liquid crystals and arrayed in front of a light source (backlight) or reflector to produce images in color or monochrome. The earliest discovery leading to the development of LCD technology, the discovery of liquid crystals, dates from 1888.[1] By 2008, worldwide sales of televisions with LCD screens had surpassed the sale of CRT units.

Each pixel of an LCD typically consists of a layer of molecules aligned between two transparent electrodes, and two polarizing filters, the axes of transmission of which are (in most of the cases) perpendicular to each other. With no actual liquid crystal between the polarizing filters, light passing through the first filter would be blocked by the second (crossed) polarizer.

The surface of the electrodes that are in contact with the liquid crystal material are treated so as to align the liquid crystal molecules in a particular direction. This treatment typically consists of a thin polymer layer that is unidirectionally rubbed using, for example, a cloth. The direction of the liquid crystal alignment is then defined by the direction of rubbing. Electrodes are made of a transparent conductor called Indium Tin Oxide (ITO).

Before applying an electric field, the orientation of the liquid crystal molecules is determined by the alignment at the surfaces of electrodes. In a twisted nematic device (still the most common liquid crystal device), the surface alignment directions at the two electrodes are perpendicular to each other, and so the molecules arrange themselves in a helical structure, or twist. This reduces the rotation of the polarization of the incident light, and the device appears grey. If the applied voltage is large enough, the liquid crystal molecules in the center of the layer are almost completely untwisted and the polarization of the incident light is not rotated as it passes through the liquid crystal layer. This light will then be mainly polarized perpendicular to the second filter, and thus be blocked and the pixel will appear black. By controlling the voltage applied across the liquid crystal layer in each pixel, light can be allowed to pass through in varying amounts thus constituting different levels of gray.

The optical effect of a twisted nematic device in the voltage-on state is far less dependent on variations in the device thickness than that in the voltage-off state. Because of this, these devices are usually operated between crossed polarizers such that they appear bright with no voltage (the eye is much more sensitive to variations in the dark state than the bright state). These devices can also be operated between parallel polarizers, in which case the bright and dark states are reversed. The voltage-off dark state in this configuration appears blotchy, however, because of small variations of thickness across the device.

Both the liquid crystal material and the alignment layer material contain ionic compounds. If an electric field of one particular polarity is applied for a long period of time, this ionic material is attracted to the surfaces and degrades the device performance. This is avoided either by applying an alternating current or by reversing the polarity of the electric field as the device is addressed (the response of the liquid crystal layer is identical, regardless of the polarity of the applied field).

When a large number of pixels are needed in a display, it is not technically possible to drive each directly since then each pixel would require independent electrodes. Instead, the display is multiplexed. In a multiplexed display, electrodes on one side of the display are grouped and wired together (typically in columns), and each group gets its own voltage source. On the other side, the electrodes are also grouped (typically in rows), with each group getting a voltage sink. The groups are designed so each pixel has a unique, unshared combination of source and sink. The electronics, or the software driving the electronics then turns on sinks in sequence, and drives sources for the pixels of each sink.
 

Gas Plasma Displays 

An overview of plasma displays

Gas plasma technology is a new way to build video and computer monitors. Essentially plasma units have the brightness and look of a CRT monitor, but they offer a much larger image and are thin enough and light enough to hang on any wall. This combination makes them ideal where lighting conditions would favor a monitor, but audience size indicates a projector. Like LCD displays, plasma monitors do not exhibit the distortion and loss of clarity in the corners inherent to CRTs.

How do plasma monitors work?

Plasma monitors work much like CRT monitors, but instead of using a single CRT surface coated with phosphors, they use a flat, lightweight surface covered with a matrix of millions of tiny glass bubbles, each having a phosphor coating. These phospors are caused to glow in the correct pattern to create an image.

What are the advantages of plasma?

Plasma monitors have several advantages over CRT-based monitors:

• Thin and lightweight: at only 4" - 6" thick and about 60-100 lbs., they’re easy to hang on any wall.
  
• Very bright: less sensitive to ambient light than most LCD projectors, plasma monitors have the brightness and contrast of CRT-based sets.
  
• 160° viewing cone: ideal when your room is wide and people may view the monitor from farther off-axis than normal.
  
• Stable and distortion-free: unaffected by magnetic fields; useful in many applications where CRT monitors or LCD and CRT projectors are problematic. Entire image always in perfect focus, not just in the center, but all the way to the corners.
  
• Look and feel: plasma somehow looks different--better--than monitors and projectors alike. It's hard to quantify that difference, but most people would say they have more depth and warmth than other types media. They look very, very good.
  

What are the disadvantages of plasma?

This new technology has several disadvantages worth mentioning.

• Cost: plasma is expensive. For that reason alone, plasma is not for everyone. But prices are coming down, as they do for most new technologies.
  
• More susceptible to burn-in than CRT monitors. It's not a good medium on which to display a company logo for two or three hours at a time. But with the appropriate precautions, and in some situations a screen saver, you should not expect problems.
  
• Resolution restrictions: plasma is subject to the same type of resolution problems as LCD or DLP projectors. You'll get the best images when the resolution of your source matches the "true" resolution of the monitor. But, as with LCD, the monitors will incorporate compression or expansion circuitry to automatically resize other resolution sources to match their native resolution, and most people will be very happy with the result. Still, if sharpness is critical for your application and you'll be using a variety of computer sources, you may be better off with a CRT-based unit.
  
• Doesn't travel well: plasma is not portable. These monitors weigh 60 - 100 pounds and they don't do well if you drop them. If you want to travel with a plasma monitor, plan to invest in a good shipping case.
  

There's one other rumored "problem" with plasma that turns out not to be true. It has been said by some that plasma units do not have a long lifespan. Actually, the estimated life span for plasma monitors (according to Sony) is about 30,000 hours-- which translates to approximately 15 years at 8 hours a day, 5 days a week (comparable, or maybe a bit better, than a CRT-based monitor).

Satellite TV On PC

Technology is advancing so fast that now one can watch satellite TV or hear radio on a home PC. All you need is special hardware known as PCTV cards that are of two kinds. One kind needs to be installed in the PC while the other kind is an external box that plugs into the PC’s USB port.

There are cards that use the PC’s infrastructure to decode satellite signals and allow users to enjoy free-to-air digital television and radio programs. There are cards that have built-in processors that allow TV viewing in a separate window while the PC runs other programs. Both kinds of cards can be utilized to receive Broadband Internet via Satellite. Requests are made using a telephone line but data is received at 40MB per second via the satellite dish.
To view satellite TV on your PC you would require a minimum processor that is Pentium II 333 MHz, an operating system like Microsoft Windows 98/ME/2000/XP, as well as hardware consisting of sound card, spare USB slot, and a CD Rom drive. If you are a computer geek you could in addition to the cards have a Windows media player, real player, or quick time player all of which will take you to the next level of viewership.
The options are many. The PC can be directly connected to a satellite dish by using a product like Hauppauge 3000 or through the Internet cable; or via the satellite box (run an aerial lead from the RF output socket of the Shy Digibox to the input aerial socket on a standard PC TV card or USB TV adapter). Direct TV and Dish TV both recommend using a connection via their proprietary satellite TV receiver box as ideal.
With a PC-TV-Radio one can simultaneously or alternately watch regular TV, a movie, or sports, and enjoy crystal clear music while writing, checking mail, telewebbing, or surfing the Internet. The options are astounding one can download and record favorite programs, record music, and be creative.

Free Satellite TV provides detailed information on Free Satellite TV, Free Satellite TV Systems, Free Satellite TV on PC, Free Satellite TV Offers and more. Free Satellite TV is affiliated with Dish Satellite Network.