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Speaking F1 HA EUN SUMMARY
studentss 추천 0 조회 5 23.03.30 21:18 댓글 2
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  • 23.04.01 10:41

    첫댓글 The Cyber World, We Live in

    Today's story book is about the cyber world that we rely on. Let's start the book, and you’ll be amazed by it!

    Before there was internet people write letters. However, the problem was it took too much time. Long ago, people used carrier pigeons, loud horns, and smoke signal to communicate. So different from the world we live in today! The 1960s brought us a new form of telegraphy. It could link countries and enable them to be in instant communication with each other. In the 1990s, the US Military dropped APRANET, but commercial networks quickly replaced it.

  • 23.04.01 10:41

    Ray Tomlinson developed the @ key which could go between the specific user's name and domain name. This would enable messages to be sent from one computer to another. Four years later, Queen Elizabeth the second sent the first email with her computer. The World Wide Web was designed to look like a spider's web. Internet hackers create viruses which can damage computers. In Korea, online gaming is the number one recreation. It's illegal to download music without paying for it!

    I don't want to suffer hacking, because it is so bad for your laptop!

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