Wednesday, August 26, 2009

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Monday, August 24, 2009

The First Virus

Elk Cloner is one of the first known microcomputer viruses that spread "in the wild," outside the computer system or lab in which it was written.

Created in 1982 by a 15 years old high school student. Named Rich Skrenta. The virus he made, as it is for the Apple II computer system.

Skrenta was already distrusted by his friends because, in illegally sharing computer games and software, he would often alter the floppy disks to shut down or display taunting on-screen messages. Because his friends no longer trusted his disks, Skrenta thought of methods to alter floppy disks without physically touching them.

During a winter break from the Mt. Lebanon High School in Pennsylvania, United States, Skrenta discovered how to launch the messages automatically on his Apple II computer. He developed what is now known as a boot sector virus, and began circulating it in early 1982 among high school friends and a local computer club. 25 years later in 2007, Skrenta called it "some dumb little practical joke."

According to contemporary reports, the virus was rather contagious, successfully infecting the floppies of most people Skrenta knew, and upsetting many of them. Part of the "success," of course, was that people were not at all wary of the potential problem, nor were virus scanners or cleaners available. The virus could still be removed, but it required an elaborate manual effort.

Elk Cloner spread by infecting the Apple II operating system using a technique now known as a "boot sector" virus. If a computer booted from an infected floppy disk, a copy of the virus was placed in the computer's memory. When an uninfected disk was inserted into the computer, Elk Cloner would be copied to the disk, thus allowing it to spread from disk to disk.

An infected computer would display a short poem on every 50th boot. Elk Cloner did not cause deliberate harm, but Apple DOS disks without a standard image had their reserved tracks overwritten. The aforementioned poem follows:

Elk Cloner: The program with a personality

It will get on all your disks
It will infiltrate your chips
Yes, it's Cloner!

It will stick to you like glue
It will modify RAM too
Send in the Cloner!

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Sunday, August 9, 2009

I am Blind, Please Help..

The most beautiful thing is to see a person smiling…
And even more beautiful is, knowing that you are the reason behind it!!!










A blind boy sat on the steps of a building with a hat by his feet. He held up a sign which said: ‘I am blind, please help.‘ There were only a few coins in the hat.






A man was walking by. He took a few coins from his pocket and dropped them into the hat. He then took the sign, turned it around, and wrote some words. He put the sign back so that everyone who walked by would see the new words.

Soon the hat began to fill up. A lot more people were giving money to the blind boy. That afternoon the man who had changed the sign came to see how things were. The boy recognized his footsteps and asked, ‘Were you the one who changed my sign this morning? What did you write?’

The man said, ‘I only wrote the truth. I said what you said but in a different way.’
What he had written was: ‘Today is a beautiful day and I cannot see it.‘

Do you think the first sign and the second sign were saying the same thing?

Of course both signs told people the boy was blind. But the first sign simply said the boy was blind. The second sign told people they were so lucky that they were not blind. Should we be surprised that the second sign was more effective?

Moral of the Story: Be thankful for what you have. Be creative. Be innovative. Think differently and positively.

Invite others towards good with wisdom. Live life with no excuse and love with no regrets. When life gives you a 100 reasons to cry, show life that you have 1000 reasons to smile. Face your past without regret. Handle your present with confidence. Prepare for the future without fear. Keep the faith and drop the fear.

Great men say, ‘Life has to be an incessant process of repair and reconstruction, of discarding evil and developing goodness…. In the journey of life, if you want to travel without fear, you must have the ticket of a good conscience.’

Source :
www.yauhui.net

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