Virus

People who use or has computer are very scared of the word "VIRUS". They think it's some kind of disease that damages you computer.. slows the computer down, and finally makes it useless(kills it). Most even think that one should not wear shoes in the computer room or that the computer gets infected if the rooms are dirts or has got rats in the room and stuffs like that. They think of "computer virus" like some "biological virus" which get transmitted through mediums.

For all of those who think like that, listen carefully... computer virus is nothing but some piece of code that gets attached to the executable file and corrupts that file eventually leading to replication of the virus on running that .exe file. You take out those foreign piece of code from the file you heal the virus. It's that simple but it's not that simple to do it. That's why there are antivirus s/w s for preventing and curing Virus.

Actually, once you get to know about the Virus... you come to know lot of things that you were unaware of..so I think Virus are somewhat useful too. 'Coz while collecting info. on viruses we get to know lots of stuffs about computer.