What does asdfghjuytrewsxcvbnjytresxc vbnmkjuytr mean?

Answer 1

You are, of course, asking about the sequence of letters on a typical keyboard, which is usually called a qwerty keyboard after the letters which are at the beginning of the upper row (you are asking about the middle and lower rows). This sequence of letters has no meaning. It was chosen because, when the typewriter was originally invented, the keys would jam together if they were pressed too rapidly, so the inventor deliberately chose a sequence of letters that would slow people down. Of course, on a modern computer keyboard, you can press the keys as rapidly as you like, and they won't jam, but the qwerty keyboard has been in use for so long that people are used to it. That's what we were trained to use, so we continue to use it.