Well, before buying any computer desk, you need to focus on its style and design. Make it sure that it matches your home and office interior look. Presently, you can also buy computer desk from the World Wide Web. There are many online stores those are selling different types of computer desk in an affordable price. You can also visit your local furniture stores to buy computer desk. Well, before computer desk there are important tips that you need to consider. Here are some of the most valuable tips for you:

• Always buy computer desk that fits your requirements. Buy desk that offers lots of features like places for your keyboard, monitor, and drawer to keep CDs, DVDs and other important materials.
• Buy computer desk that has pigeonholes. There must be self to keep your printer and scanner. Check if there is space for router and modem.
• Buy computer desk that should offer good space in your home. Always measure the size of your room, before buying a computer desk.
• Always buy computer desk from genuine stores and check if the give guarantee or warrantee on your purchase.

Computer desks are one of the most important accessories of your PC. Therefore, it becomes important to buy one and must be stylish.

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Well, before buying any sort of computer monitor, you need to understand the basic specs. Brightness, picture, clarity, and contract are the most important things that you need to believe. Before 10 years cathode ray tube were highly used, but now everything has changed. People are not highly using LCD computer monitors for their office and home requirements.

Today, you can also get plasma computer monitors those are creating lots of buzz. There are numbers of computer stores those are selling different types of and sizes of computer monitors. Well, before buying any of these screens you need to have some idea. Plasma computer monitors are costlier and only branded companies sell these screens. LCD computer monitors are one of the favorite choices among all computer users. With LCD computer monitor, you will definitely get clear picture, brightness and protection to your eyes.

These days, all computer users like flat screen LCD monitor. Walk into any office or home, you can easily get flat screen LCD computer monitors those looks great and highly stylish. If you are using an assembled computer, then you can easily attach the type of computer monitor that you like. There are many branded companies those are selling different types of computer monitors. You can also buy computer monitors from the Internet, as there are many online computer stores those are selling best monitors.

If the virus is found in any of the PC’s that PC should immediately be isolated. The virus can be removed by giving an antidote by studying the virus. The machine should be put into use only after the virus is eliminated.
Viruses and such

A Virus is defined as a program inserted into another program. It gets activated by its host program. It replicates itself and spreads to others through floppy transfer. A virus infects data or program every time the user runs the infected program and the virus takes advantages and replicates itself.

There are two types of computer viruses ‘parasitic’ and ‘boot’ virus.

A Parasitic virus attaches itself to other programs and is activated when the host program is executed. It tries to get attached to more programs so that chances of getting activated is more. It spreads to other computers when the affected programs are copied. ‘Jerusalem’ and ‘Datacrime’ are parasitic viruses.

A Boot virus is designed to enter the boot sector of a floppy disc. It works by replacing the first sector on the disc with part of itself. It hides the rest of itself elsewhere on the disc, with a copy of the first sector. The virus is loaded by the computers built-in start-up program when the machine is switched on. The virus loads, installs itself, hides the rest of itself and then loads the original program. On a hard disc, virus can occupy DOS boot sector or master boot sector.
Some Reported Viruses

C-Brain: Amjad and Basit, two pakistani brothers, developed this software in January 1986 to discourage people from buying illegal software at throwaway prices. This was the most famous virus ever found and has a record of damaging few millions of personal computers. This is designed to stay in the boot sector of the disc or near zero sector. The virus enters the machine memory once the PC is booted with the infected floppy.

Macmag: This virus attacked Apple Macintosh computers only. Not much damage is reported because of this virus. This was not noticed on any IBM compatible PCs. It displayed a message of peace on the monitor and killed itself.

Cascade: This virus attacked IBM PCs and compatibles. The letters on the screen could be seen dropping vertically down to the bottom of screen after the virus picked them off in alphabetical order. This is a sort of parasitic virus. It attaches itself to other programs and gets activated when the host program is executed. It gets copied to other PCs when the programs are copied.

Jerusalem: Found in 1987 at Hebrew University, Jerusalem, this virus was designed to activate only on Friday, January 13 and delete all the files executed on that day. This infects the COM and EXE files. This is similar to Cascade virus in that it is parasitic in nature. This virus attaches itself to COM and EXE files to damage the data.

Daracrime/Columbus or October the 13th virus: This virus is similar to Jerusalem and was programmed to attack on October 13, 1989. Track zero of computer hard disk is destroyed and the contents of discs are rendered unreadable. This virus enters COM and EXE files and damages the hard disk. An antidote called ‘Vchecker’ was developed by the American Computer Society. Fortunately the virus was located in March 1989 itself and the damage reported after October 13 was minimal.

Bomb: This is also know as ‘Logic Bomb’ and ‘Time Bomb’. An event triggered routine in a program that causes a program to crash is defined as a ‘bomb’. Generally, ‘bomb’ is a software inserted in a program by a person working in the company.