What is a full keyboard mobile phone? It is better to have a history of development.

QWERTY keyboard, also known as full keyboard.

The keyboard we use now and the keyboard of full keyboard mobile phone are both called QWERTY COTTY keyboard.

That is, the first six letters of the first line are the keyboard layout of Q, W, E, R, T and Y, which is the widely used computer keyboard layout now.

"Full keyboard" mobile phone, namely "QWERTY" mobile phone, is a mobile phone with six letters in the upper left corner of the main keyboard letter area, which is widely used by international brands such as BlackBerry and PLMA.

function

Perhaps you won't think that the QWERTY keyboard first appeared 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.

Ironically, this keyboard arrangement, which was formed 29 years ago to slow down typing, has continued to this day. 1986, sir Bruce brewin 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.

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Nowadays, qwerty keyboards are not only used in computer 10 1 standard keyboards, but also in many portable devices such as smart phones and PDA. Different from the original intention of qwerty keyboard on typewriter, the typing speed of qwerty keyboard is much faster than the traditional 0-9 numeric keyboard on a small device like a mobile phone.

It is a miracle that this arrangement, which was used to slow down the typing speed a century ago, has been used today and has become a standard.

At first, typewriters' keyboards were arranged alphabetically, but if the typing speed was too fast, some key combinations were easy to get stuck, so Christopher Latham Sholes invented the QWERTY keyboard layout. He put the most commonly used letters in the opposite direction to "improve the typing speed as much as possible without 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.

Key position design of keyboard

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.

As we all know, the main design purpose of Huang Fengying 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 speed-down design, it puts a common combination like ED on one finger, but there are also many acceleration combination keys like 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".

Supplement:

BlackBerry is a mobile e-mail system terminal launched by RIM in Canada, which is characterized by supporting wireless information services such as pushing e-mail, mobile phone, short message, network fax and web browsing.

Pocket PC is the traditional name of popular personal digital assistant (PDA, also known as PDA), which is a hand-held setting form and also a famous PDA. Broadly speaking, Palm is a PDA, which was invented by Palm Company. The operating system on this PDA is also called Palm and sometimes Palm OS. Palm in a narrow sense refers to PDA products produced by Palm Company, which is different from other PDA products running Palm operating system such as Clie of Sony Company and Visor/Treo of Handspring Company. Its data is displayed on the liquid crystal display (LCD). Its remarkable feature is its basic data input method: a writing device called a stylus, which can click the icon on the display screen to select the input items. The stylus can also be used to input information (words and numbers) on the surface of the display screen by handwriting, which is called graffiti. PalmPilot series products were originally developed and designed by a company called "PalmComputing". After two mergers and acquisitions, this company became a business unit of 3Com, and then Palm became a company independently from 3Com.

-The above content is transferred from Baidu Encyclopedia.