At first, the keyboards of typewriters were arranged alphabetically, but if the typing speed is too fast, some key combinations are prone to key sticking problems, so Christopher? Larson? Christopher latham Shoals invented the QWERTY keyboard layout. He put the most commonly used letters in the opposite direction, so as to slow down the typing speed to the maximum extent and avoid getting stuck. Grant applied for a patent in 1868, and the first commercial typewriter with this layout was successfully put on the market in 1873. This is why there is today's keyboard arrangement.
Ironically, this keyboard arrangement, which was formed 29 years ago to slow down typing, has continued to this day. 1986 Bruce? Sir Buryvein once said in the article "Wonderful Writing Machine": "The arrangement of QWERTY is very inefficient." For example, most typists are right-handed, but on QWERTY, the left hand does 57% of the work. The two little fingers and the ring finger of the left hand are the weakest fingers, but they are used frequently. The utilization rate of letters in the middle column only accounts for about 30% of the whole typing workload, so in order to type a word, you often have to move your fingers up and down.
(So people who type fast may be crazy ...)
The origin of 2.2. e-mail
197 1 year, the ARPANET funded by the U.S. Department of Defense was in full swing, and a very sharp problem appeared: the scientists involved in this project were doing different jobs in different places, but they could not share their research results well. The reason is simple, because everyone uses a different computer, and everyone's work is useless to others. They urgently need a method to transmit data between different computers through the network. Ray Tomlinson, a Ph.D. student at the Massachusetts Institute of Technology who works in ARPANET, combined a software that can be replicated between different computer networks with a communication software that is only used for single computers, and named it SNDMSG (that is, sending messages). In order to test, he used this software to send his first email on Arpad, and the recipient was himself on another computer. Although even Tomlinson can't remember the content of this email, that moment is still full of historical significance: email was born.
Later, according to his own memory, the content of the first email was probably: "QWERTYUIOP" (the first row of letters on the keyboard)