For thousands of years, if you wanted to send a secret message, there was basically one way to do it. You’d scramble the message using a special rule, known only to you and your intended audience.

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The keyboard is one of the most important devices of your computer, allowing you to give commands for the different operations you want to perform. Most keyboards these days come with 104 alphanumeric ...

If you take a look at your laptop's keyboard, you'll notice that the top row keys have icons printed above, with "F" and a number, like F1, F2, and so on, below each one. These are known as function ...