The English symbol of "~" is called "Tilde", which means inclined symbol, nasalized symbol and font size. Chinese is commonly known as "wave".
""is called "interval symbol" and is used in some non-Chinese names or bibliographies. For example, the boundaries between the names of foreigners and some ethnic minorities are marked with spaces. The boundary between the title of the book and the title of the article (chapter or volume) is marked with a space symbol.
Extended data
Universal keyboard classification
qwerty keyboard
Keyboards have a long history. As early as 17 14, people in Britain, America, France, Italy, Switzerland and other countries began to invent various types of typewriters. The earliest keyboards were used on typewriters with immature technology at that time.
Until 1868, Christopher Latham Sholes, the American "father of typewriter", obtained the patent of typewriter model and the right to operate it. A few years later, he designed a practical form of modern typewriter and standardized the keyboard for the first time, which is now the "QWERTY" keyboard.
Why should the keyboard be standardized to the current "QWERTY" keyboard key layout? This is because the keyboards of typewriters are arranged alphabetically at first, and typewriters are all-mechanical typing tools, so if the typing speed is too fast, some key combinations are prone to key sticking problems.
So Christopher latham Shoals invented the QWERTY keyboard layout. He put the most commonly used letters in the opposite direction, and slowed down the typing speed as much as possible to avoid getting stuck. Shoals 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.
QWERTY's keyboard key layout is very inefficient. For example, most typists are right-handed, but with the QWERTY keyboard, the left hand takes up 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.
1888 An open typing competition was held in the United States. Ma Jialin, a court stenographer, showed his blind typing skills according to the clear division of fingering, and the mistakes were only three ten thousandths, which surprised the people present. According to the records, Ma Jialin's prize was 500 yuan. Since then, many people have followed this blind typing, and the United States has also begun to set up schools to train typists.
dvorak keyboard
Because of the appearance of blind typing technology, the keystroke speed is enough to meet the needs of daily work. However, 60 years later (1934), a man named dvorak invented a new arrangement method, which enabled his left and right hands to alternately type more words. This keyboard can shorten the training period by 1/2 times and increase the average speed by 35%.
Dvorak keyboard layout principle is:
1, try to strike alternately with your left and right hands to avoid one-handed combo;
2. The average moving distance of verbal attack keys is the smallest;
3. The most commonly used letters should be ranked in the key position.
Malt keyboard
More reasonable and efficient than Dvorak keyboard is 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.
By the middle of the 20th century, the keyboard had another use-as a basic input device for computers.
On the other hand, up to now, "QWERTY" keyboard is still the most used keyboard layout, which is a very typical example of "inferior products win superior products".