计算机键盘上的英文字母排列是有特定含义的，还是当时随即排列的？

The Arrangement of the Letters on Keyboard
Look at the keyboard of any standard typewriter or computer. “Q”, “W”, “E”, “R”, “T”, and “Y” are the first six letters. Who decided on this arrangement of the letters? And why?
People tried for centuries to invent the typewriter. In 1714 England, Henry Mill filed a patent for a machine called An Artificial Machine or Method for the Impressing or Transcribing of Letters, Singly or Progressively one after another, as in Writing, whereby all Writing whatsoever may be Engrossed in paper parchment so Neat and Exact as not to be distinguished from Print. That machine probably didn’t sell because no one could remember its name!
The fist practical typewriter was patented in the United States in 1868 by Christopher Latham Sholes. His machine was known as the type-writer. It had a movable carriage, a lever for turning paper from line to line, and a keyboard on which the letters were arranged in alphabetical order.
But