1.QWERTY keyboard is to slow down typing.
At first, the keyboards of typewriters were arranged alphabetically, but if the typing speed was too fast, some key combinations would easily get stuck, so Christopher Latham Sholes invented the QWERTY keyboard layout. He put the most commonly used letters in the opposite direction to slow down the typing speed to the maximum extent and avoid being 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.
2.DUORAK keyboard is much faster than QWERTY keyboard.
Augst in 1930？ August dvorak invented an advanced Dolak keyboard system, in which nine most commonly used letters are listed on the keyboard. This design enables typists to type at least 3000 words without leaving the keyboard. QWERTY can only do 50 words. DUORAK reduces work intensity and improves work efficiency by reducing finger movement. With DUORAK, the typist's fingers move an average of 65,438+0 miles a day, while QWERTY moves 65,438+02 to 20 miles.
3. A more advanced malt keyboard
Further than Dolak is Li Lian? The malt keyboard invented by Lillian Malt. It changes the original staggered rows of character keys, makes the thumb easier to use, and makes the keys such as backspace, which were far away from the center of the keyboard, easier to reach. But the malt keyboard needs special hardware to be installed on the computer, so it has not been widely used.
The key position design of a keyboard includes two concepts, one is the design of main English and numeric keys, and the other is the design of various auxiliary keys.
The most common English and digital design scheme is the commonly known "QWERTY" Cody keyboard. This is a key scheme invented by Christopher Latham Sholes in 1868.
The main design purpose of Cody keyboard is to make the keystroke speed not too fast. However, there is a small mistake in many articles, that is, the key position of Cody's keyboard is not designed to "make the keystroke speed not too fast, so as not to get stuck", but to "try to improve the typing speed without getting stuck".
There is a subtle difference between these two statements, that is to say, reducing typing speed is not the ultimate goal, and QWERTY keyboard is not blindly reducing speed. Although it has a deceleration design, which puts a common combination such as ED on one finger, it also has an acceleration combination key such as er.
In fact, the fundamental reason for this design lies in the structure of mechanical typewriter. The structure of the I-bar determines that when two closely spaced types are pressed at the same time, they will get stuck, while the two far apart types will not have the same problem. I believe that people who have experience in using English typewriters should have some experience.
On Cody's keyboard, some commonly used letters are placed in the position of ring finger and little finger, which has always been considered as using the inflexibility of little finger to slow down. However, this statement does not take into account the actual situation of mechanical typewriters. Although the index finger is the most flexible, the keys on the key position of the index finger are also the easiest to get stuck, so it is natural to put the commonly used letters on the edge to ensure that they will not get stuck when typing at high speed.
Therefore, the ultimate goal of designing Huang Fengying keyboard is not simply to reduce the typing speed. In fact, the design of Huang Fengying keyboard is only to improve the typing speed, just to "improve the typing speed as much as possible without jamming".
After entering the 20th century, the invention of electromechanical typewriters made it no longer an important problem that the typing arm of mechanical typewriters was stuck, and many high-speed typing keyboards came into being. The most famous one is DVORAK Dvorak keyboard.
Dvorak keyboard is a key scheme designed by Professor august dvorak in 1930. Because the mechanical structure of keys is no longer considered, the key arrangement is completely designed according to the idealized keystroke rate distribution. The stroke of finger movement is much smaller than that of Cody keyboard, and the average typing speed is almost twice as fast. However, like many things, the power of habit is irresistible. So far, Dvorak keyboard is only used in a few professional occasions. But if you want to try, you can try the dvorak keyboard scheme that comes with Windows.
Non-English keyboard scheme
Keyboards in various languages are basically changed from English keyboards, and the arrangement of most keys is not far from that of English keyboards, with only some subtle differences. For example, the dollar symbol on the British keyboard became the pound symbol, while the mother and daughter Y and Z on the German keyboard exchanged positions.
Keyboards in various Far Eastern languages are not much different from non-standard American English keyboards in English keys, but there are obvious differences in some auxiliary keys. For users in China, the easiest non-American keyboard to see is probably the Japanese keyboard that is common in the second-hand market. Compared with the standard English keyboard, most of its keys are the same, but there are obvious differences in the positions of some punctuation marks, which leads to the fact that when some punctuation marks are used in the English system, the identification of the keys does not correspond to the actual content.
Another concept of key position design is the design of auxiliary keys. From the earliest IBM PC 83 keyboard to the mainstream 108 keyboard, it has been updated for several generations, but there is no fundamental change in general. Although some of them are compact designs, they are not successful from the market reaction. It can be seen that the current keyboard key position design has been tested by practice for many years and is a very mature and ideal design.