First of all, typing was invented by Mill in England, but it is widely used in American shallows. 17 14 years ago, an Englishman named Mill had invented a machine that could print English letters on paper, but it was not widely used at that time. 1808, an Italian named Pereg Lini, whose girlfriend was blind, made the first practical typewriter in order to make her write to herself, and the keyboard began to appear on the typewriter at this time. The first typewriter model in the world was born in 1855. At that time, the keyboards were arranged alphabetically. By 1868, Shoals Company of the United States had obtained the patent right and management right of typewriter and started the research and development of typewriter. A few years later, he introduced the first modern typewriter with purely mechanical principles. Each connecting rod is marked in English, which can quickly and neatly print English on paper, greatly speeding up the speed of paperwork.
Then, the keyboard order is to solve the problem of typewriter keys. After Shoals introduced the modern typewriter in the19th century, it was widely loved by the market. However, there was a problem at that time, that is, when people typed too fast, the connecting rod and the hammer on the typewriter easily got stuck together, so people had to slow down their typing. In order to solve this technical defect, Shoals changed the order of several letters, so it became the letter layout on the keyboard we are using now. Shoals didn't change the position of the keyboard casually. At that time, considering that most people are right-handed, he arranged the commonly used letter combinations at both ends, taking into account the even use of all fingers in the upper two hands, so as to prevent the typewriter from being easily stuck and improve the typing speed better.
Finally, in order to type smoothly and use fingers evenly, it evolved into the current keyboard layout sorting.