What Is a Computer Trick That in the Past Was Cool?

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What is a computer "trick" that in the past was cool, but today is unimpressive and trivial?

In 1992, when I was 14, we had computers in school. T were stand-alone PC's. The teacher responsible for the computers had learned that I knew one thing or two about computers, so when he had a problem, he came to me. This particular time he was suspecting that someone was playing around in DOS, deleting files and causing trouble. He had no idea who it was and asked me to help figure it out. I used a hex editor on COMMAND.COM , located the letters DEL and changed them to three random lette...

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DEL. I had already changed my own initials to “DEL” at the time, so I chose Del and deleted “DOS” from the filename. He typed in DELETED.ZIP, and I had to wait for DOS.COM to download it as I was too busy trying to figure this out without the proper software. In this case, the computer had a very important mission in mind. All it had to do was download a file, and we could play a game. You could call it a game, and it wasn't very complicated to accomplish, but I knew it would be very interesting if not for the fact that it was a DOS program. I did play a couple of times though. I was always trying to get my friends to play. It was very hard to get them interested in a game that had been developed before their time. It must.