Today is an internet age, and we can touch computers every day. I wonder if you have paid serious attention to computer keyboards? If you have paid attention to it, you will find that the 26 letters on the computer keyboard have no rules to follow, it is a completely chaotic order! Therefore, it is conceivable that it is difficult to memorize the order of these 26 unordered letters. Does that mean there is no way out?
Methods of memorizing the order of 26 letters on the computer keyboard
In fact, we can find the memory rules by using our flexible brains. Here are two simple, easy-to-remember and interesting memory methods I recommend for you.
method 1:? Falling in love with someone who doesn't come home?
The letters on the keyboard are from top to bottom:
The first row contains 1 letters: seven (q) bowls (w) geese (e) meat (r) soup (t), and (y) none (w) one (y) me (w) grandma (p);
nine letters in the second row: love (a) death (s) beans (d) rot (f) soup (g), returning to (h) home (j) happiness (k) (l);
seven letters in the third row: from (z) line (x) car (c) not (v) helping (b) you (n) buying (m);
The whole pithy formula can be memorized by using our unique memory method:
Seven bowls of goose soup, but none for my wife (all for me). The wife said:? I fell in love with tofu soup. I will be happy when you go home. ? After a while, the wife said:? Sorry, I didn't buy the bike you wanted. ?
method 2: five jingles
according to the English letters arranged on the keyboard, they correspond to the letters of Chinese Pinyin, and according to the pronunciation of Chinese initials and finals, they can be divided into five segments, namely, QWERT, YUIOP, ASDFG, HJKL and ZXCVBNM. These five paragraphs are rhythmic and easy to read and remember. According to these five paragraphs, five formulas can be compiled, and five-year-old blind children can easily tell the arrangement law of keyboard letters!
The formula is as follows:
Q W E R T, Y U I O P bully my Russian Rite, Yi Yu Yi Ma
A S D F G H J K L Astor Buddha's song, and I can enjoy drinking the machine
Z X C V B N M self-study words and play it at the end
After reading this formula, many people may find it inconvenient to remember. The formula can be understood as follows:
? It was Russian and Japanese spies who bullied me. ? (bully me, Russia and Japan)
? I have a mother-in-law in Yiwu. ? (Yiwu (Yu), my wife)
? Amito Buddha song? Did you sing it? Aside Buddha song. ?
? Have a coke? Written? Drink machine coke? .
self-study words (end)? Panama? It is said that it has become a self-study word (end) broadcast.
It is worth mentioning that in this jingle, we name the three consecutive keys B, N and M as? Panama? Keys because they are? Ba Na Ma ? The three initial letters of. When you click the B, N and M keys with Sogou Pinyin input method, it will come out? Panama? The word, everyone can try! In this way, you will remember the position order of the three letters, and it will be unforgettable for life. Methods of efficiently memorizing the order of 26 letters on the computer keyboard
In fact, we can find the memory rules by using our flexible brains. Here are two simple, easy-to-remember and interesting memory methods I recommend for you.
The letters on the keyboard are from top to bottom:
The first row contains 1 letters: seven (q) bowls (w) geese (e) meat (r) soup (t), and (y) none (u) one (i) my wife (p);
nine letters in the second row: love (a) Shang (s) Dou (d) Fu (f) Tang (g) Hui (h) Jia (j) Kuai (k) Le (l);
seven letters in the third row: from (z) line (x) car (c) not (v) helping (b) you (n) buying (m);
The whole pithy formula can be memorized by using our unique memory method:
Seven bowls of goose soup, but none for my wife (all for me). The wife said:? I fell in love with tofu soup. I will be happy when you go home. ? After a while, the wife said:? Sorry, I didn't buy the bike you wanted. ?
what else is there in the second row? I cried when I fell in love with each other. Why are the 26 English letters on the computer keyboard not arranged in the order from A to Z?
1.QWERTY keyboards are designed to slow down the typing speed.
At first, typewriters' keyboards were arranged alphabetically, but if the typing speed is too fast, some key combinations are easy to get stuck, so Christopher? Larson? Christopher Latham Sholes invented the QWERTY keyboard layout. He placed the most commonly used letters in the opposite direction, and slowed down the typing speed to the utmost extent to avoid the key jam. Grant applied for a patent in 1868, and in 1873, the first commercial typewriter using this layout was successfully put on the market. This is why there is the arrangement of keyboards today.
Ironically, this keyboard arrangement, which was formed 129 years ago to slow down the speed of typing, continues to this day. Bruce in 1986? Sir Buryvein once said in the article "Wonderful Writing Machine":? QWERTY's arrangement is very inefficient. ? For example, most typists are right-handed, but with QWERTY, the left hand takes up 57% of the work. The two little fingers and the left ring finger are the weakest fingers, but they are frequently used. The utilization rate of letters in the middle column only accounts for about 3% of the whole typing work, so in order to type a word, you often have to move your fingers up and down.
2. DUORAK keyboard much faster than QWERTY keyboard
Augst in 193? August Dvorak invented a superior DUORAK keyboard system, in which nine most commonly used letters were listed in the keyboard. This design enables the typist to type at least 3 words without leaving the keys. QWERTY can only do 5 words. DUORAK reduces work intensity and improves work efficiency by reducing the amount of finger movement. With DUORAK, the typist's fingers move an average of 1 mile a day, while QWERTY moves 12 to 2 miles.
during world war ii, Augst? Duo Ranke once assembled 14 naval typists to practice DUORAK, and after one month, their speed increased by an astonishing 68%. DUORAK keyboard makes the right hand bear 56% of the work; The most powerful finger has the largest workload; 7% typing is done in the middle column without moving your fingers. However, at that time, it coincided with the Second World War and the lack of combat materials. This new keyboard was discontinued without asking the market.
try the DUORAK keyboard yourself!
Windows has built-in support for it. Open it? Control panel? Keyboard? , enter? Input method locale? Tab, and then click? Add? Button, will? Input method locale? Set to? English (USA)? , and in? Keyboard layout/input method? Find it in the column? American English -DUORAK? . After confirmation, the key positions have all changed. Now you have the capital to improve your English typing speed. Of course, it still takes time to re-adapt to the new system and train patiently before success.
3. The more advanced MALT keyboard
What goes further than DUORAK is the connection? The MALT keyboard invented by Lillian Malt. It has changed the original staggered ranks of keys, and made the thumb more used and used. Back button? (Backspace) and other keys that were originally far away from the center of the keyboard are easier to reach. However, the MALT keyboard needs special hardware to be installed on the computer, so it has not been widely used.
There is also the following statement
The computer keyboard evolved from the English typewriter keyboard. When it first appeared on the computer, it was called? Teletypewriter? Part of the image.
paper tape typewriters and card typewriters
In fact, keyboards appeared on computer accessories earlier than teletypewriters. In the era when computers still occupied a hall, the main computer input devices were punched paper tapes and punched cards. Of course, these paper tapes and cards could not be worn out by hand. They were for special use? Paper tape punch? And? Card punch? To wear out, and both machines also have an electric typewriter that looks like an ordinary typewriter as an input device. Only relatively speaking, these two devices are not part of the computer, which is different from teletypewriter, so we don't regard them as part of the development history of computer keyboards.
? Teletypewriter? It was the main interactive input and output device of the computer before the keyboard+display input and output device appeared. You can imagine it as a printer with a keyboard on the top cover, and the words typed by the user and the results output by the computer will be printed on the print output port in front of the keyboard.
? Teletypewriter? It is the most important computer interactive input and output device in the era of MAINCOMPUTER and SMALLCOMPUTER. After the mid-197s, with the maturity of display design, teletypewriter gradually withdrew from the world of computers, while keyboard became an independent device.
? Teletypewriter? Our keyboard is not as key-pressed and multifunctional as today's computer keyboard. In fact, it is almost the same as a full-size typewriter keyboard, with a mechanical key structure under bakelite plastic. This design was also inherited by the early computer keyboard.
In this period, due to the small size of personal computers, the popular design is to make the keyboard directly on the host computer, which is the structure of the famous APPLEII series computers. However, as IBM PC began to introduce the then huge hard disk into personal computers, in the mid-198s, independent keyboards became the mainstream design.
Early keyboards were almost all mechanical keyboards, to be precise, mechanical contact keyboards, which used electrical contact as a symbol and mechanical metal springs as an elastic mechanism. This kind of keyboard was very popular at that time because of its hard feel, long key stroke, quick and crisp change of key resistance and close touch to typewriter keyboard. Up to now, quite a few people still miss the touch of this keyboard.
However, the two biggest disadvantages of mechanical contact keyboard are that the mechanical spring is easily damaged, and the electrical contact will be oxidized after long-term use, resulting in the failure of keys. Therefore, after the 199s, the mechanical touch keyboard gradually withdrew from the historical stage.
at first, it was replaced by an electromagnetic mechanical keyboard. The electromagnetic mechanical keyboard is still a mechanical keyboard, but it is different from the mechanical contact keyboard in that it does not rely on mechanical force to connect two electrical contacts, but closes the electrical contacts in a micro potentiometer, and a magnet is placed under the keys to connect the current through magnetic force.
Compared with the mechanical contact keyboard, the service life of the electromagnetic mechanical keyboard is much longer, but it still fails to solve the problem that the mechanical moving part of the mechanical keyboard is easily damaged, so the electromagnetic mechanical keyboard did not survive in the market for long, and was quickly replaced by the non-contact keyboard that appeared in the late 198s.
So the contactless keyboard is different from the previous ones? Contact keyboard? Relatively speaking, with? Contact keyboard? The difference is that they don't rely on the mechanical connection of conductive contacts to obtain the key signal, but rely on the change of the electrical parameters of the key itself to obtain the key signal. Because there is no need for mechanical contact of contacts, its service life can be much stronger.
the main non-contact keyboards are resistive keyboards and capacitive keyboards. Among them, capacitive keyboard is more widely used because of its simpler process and lower cost. Compared with the mechanical keyboard, its two biggest characteristics are that the spring made of elastic rubber replaces the mechanical metal spring, and at the same time, the electrical communication of the mechanical keyboard is changed to obtain the key signal through the capacitance change brought by the distance change between the key bottom and the two capacitor plates at the keyboard bottom.
Compared with the mechanical keyboard, the feel of the capacitive keyboard has changed greatly, and it has become soft and resilient. This feel has continued to this day and has become the mainstream design feel of the keyboard at present, which is why many articles say that the current keyboards are all capacitive keyboards, but in fact, this feel does not come from the capacitive structure, but from the replacement of mechanical metal springs by rubber springs, which is not the reason why the capacitive keyboard is a capacitive keyboard.
Because of its principle, each key of a capacitive keyboard must be made into an independent closed structure. Such a keyboard is also classified as? Closed keyboard? .
For most keyboard articles, the capacitive keyboard has come to an end, but in fact, their mistakes are also here. Why? Let's sell a key here first, and then continue when we talk about the structure of the keyboard.
Keyboard key position design
The key position design of a keyboard includes two concepts, one is the main English and numeric key position design, and the other is various auxiliary key position design.
The most common English and numeric keypad design scheme is commonly known as? QWERTY? Cody keyboard. This is a bond scheme invented by Christopher Latham Sholes in 1868.
As we all know, the main design purpose of the 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 design of Cody keyboard is not necessary? So that the keystroke speed is not too fast and it will get stuck? , but? Try to improve the typing speed without getting stuck? .
There is a subtle difference between these two statements, that is to say, slowing down the typing speed is not the ultimate goal, and the QWERTY keyboard is not blindly slowing down. Although it has a slow-down design that puts a common combination like ED on one finger, it also has many accelerated key combinations such as ER.
actually, this