TWI459240B - Keyboard and Chinese character input method - Google Patents

Description

Keyboard and Chinese character input method

The invention relates to a keyboard and an input method suitable for Chinese character input, in particular to a Chinese character input keyboard and an input method capable of reducing the number of keystrokes input by a Chinese character.

Portable devices such as mobile phones, personal digital assistants (PDAs) are often equipped with a digital keyboard (keypad). Due to the limited size of the portable device, the numeric keypad consists of digits 0 to 9 and several other keys. By setting the position of each letter on the digital keyboard in advance, it is possible to input the Chinese pinyin by inputting a series of digit keys, and then input the Chinese characters.

Figure 26 is a layout diagram of the digital keyboard of the existing mobile phone. As shown in Fig. 26, letters are set on the digit buttons 2-9, respectively. The letter "abc" is set on the button "2", the letter "def" is set on the button "3", the letter "ghi" is set on the button "4", and the letter "jkl" is set on the button "5". The letter "m" is set on the button "6", the letter "pqrs" is set on the button "7", the letter "tuv" is set on the button "8", and the letter "wxyz" is set on the button "9".

With the advent of the 3G era and the application and development of WiFi on portable devices, data applications will soon become a major application direction for portable devices in the future, such as e-mail, instant messaging, mobile office and mobile BLOG. In these applications, the input of fast multi-text is one of the important factors that restrict the rapid popularity of these applications for users who use Chinese characters.

At present, the more popular input method is the T9 input method, which is input with a digital button. This input method is only suitable for the input of a few Chinese characters, and is not suitable for a large number of Chinese character text input. The reasons are as follows: a) When the user attempts to input more text by this method (>70), a Chinese character "王", it is necessary When typing 7 or 8 times, when you want to input 70 Chinese characters, the number of keystrokes should be about 400 times, and the efficiency is very low. b) When a large number of Chinese characters are input, such low input efficiency will be brought to bring Extremely high levels of fatigue affecting the user's input interest are likely to cause the user to abandon the task performed.

In addition, another solution on the market is the Qwerty/Sure Type input method, which is used in RIM's Black Berry products. Recently, some manufacturers in the domestic market have adopted such input methods on their high-end products, such as Dopod. This type of input method can increase the input efficiency by two-handed keystrokes to perform a large amount of text input, but it is not suitable for a large number of Chinese character input, and it is also difficult to perform one-handed operation. The reason is as follows: When using the Qwerty/Sure Type keyboard with one hand, the thumb memory load is greatly overweight, and the user does not match the mental mode of the Qwerty/Sure Type operation, resulting in too long recognition time, extremely low efficiency, even worse than the traditional Digital key input.

The present invention has been accomplished in view of the above-described problem of rapidly performing multi-text Chinese character input. It is an object of the present invention to provide a keyboard and a corresponding Chinese character input method capable of inputting multi-text Chinese characters with high efficiency.

In a first aspect of the invention, a keyboard is provided, comprising: a button for configuring an initial according to a Chinese pinyin scheme and a button for configuring a final according to a Chinese pinyin scheme.

Preferably, the final is a final other than a single final. Preferably, the final ‘ao’ is placed on the button '1' and the final ‘ong’ is placed on the button ‘o’.

Preferably, the finals other than the finals 'ao' and 'ong' are arranged in two columns.

Preferably, the two columns of finals are respectively disposed on both sides of the digital keyboard.

Preferably, the two columns of finals are interleaved with the column digit buttons of the digit keyboard.

Preferably, the two columns of finals are arranged on the same side of the digital keyboard.

Preferably, the vowels of the confusing sound are set on the same button.

Preferably, the vowels of similar morphology are placed on the same button.

Preferably, the Chinese character punctuation marks are set on the keys on which the finals have been set.

Preferably, the '0' key is set as a button for switching the input method.

Preferably, the keyboard is a physical keyboard.

Preferably, the physical keyboard includes a pressing keyboard, a touch keyboard, and a proximity keyboard.

Preferably, the keyboard is a virtual keyboard.

In another aspect of the present invention, a method for inputting a Chinese character using a keyboard is provided. The keyboard includes a button for configuring an initial according to a Chinese Pinyin scheme and a button for configuring a final according to a Chinese Pinyin scheme, the method comprising the steps of: pressing the configuration The initials are input according to the initials of the Chinese pinyin scheme; the finals are input by pressing the keys of the finals according to the Chinese pinyin scheme; and the initials and finals are recognized as corresponding Chinese characters according to the Chinese pinyin scheme.

In another aspect of the present invention, a method for inputting a Chinese character using a keyboard is provided, the keyboard comprising a button for configuring a final according to a Chinese pinyin scheme, the method comprising the steps of: inputting by pressing a button configured to match a final of a Chinese pinyin scheme; The finals; and according to the Chinese pinyin scheme, the input finals are identified as corresponding Chinese characters.

By using the above keyboard and the corresponding input method, the input efficiency of the Chinese character can be obviously improved, especially in the case of a large amount of text Chinese character input, the efficiency improvement is more remarkable, and the user's existing mental mode does not need to be changed and the support can be quickly operated by one hand. .

The embodiments of the present invention are described in detail below with reference to the accompanying drawings, and the details and functions that are not necessary for the present invention are omitted in the description to avoid confusion of the understanding of the present invention.

According to the Chinese pinyin scheme, a Chinese character can be represented by a combination of an initial such as b, p, m and a final such as a, e, ai, ang. The finals are divided into single finals such as a, o, e, i, u, v, and finals such as ao, ai, and ang. In the finals, the finals other than the single finals are regular combinations of letters, and the number of combinations of these finals is limited, such as ao, an, ang, in, ing, en, eng, un, ue, ui, iu, ei. , ie, ai, ia, ou, uo, ong.

In the input process of Chinese characters, the appearance of the finals other than the single finals is very high, and the combination is fixed, which is a very significant feature. Therefore, the present invention utilizes this feature to add a key supporting the finals to the conventional keyboard of the mobile phone without changing the existing mental model of the user, and supports the input and spelling rules of the finals in the input method. For example, if the user wants to input the word "王", instead of inputting the four combinations of w, a, n, and g, enter the word "王" as in the past, but use "w" and "ang". Enter the word "王" in combination.

Fig. 1 is a view showing a layout outline of a final keyboard according to a first embodiment of the present invention. As shown in FIG. 1, the final keyboard according to the first embodiment of the present invention adds two columns of keys on the conventional digital keyboard for inputting a final vowel other than a single final, and arranging a final ao on the first and second keys. Ang.

According to the frequency of use of the finals in the first 500 words in the common word frequency table, as well as the operation effect and comfort of the buttons. As shown in Figure 1, add a list of final keys between the first column and the second column of the existing digital keyboard for configuring 'an, ang', 'in, ing', 'en, eng', 'un, Ue', add another column of finals between the second column and the third column, used to arrange 'ui, iu', 'ei, ie', 'ai, ia', 'ou, uo'. Further, ‘ao’ is placed on the '1' key, and ‘ong’ is placed on the ’0’ key.

Fig. 2 is a view showing a layout outline of a final keyboard according to a second embodiment of the present invention. As shown in FIG. 2, the final keyboard according to the second embodiment of the present invention has two columns of final keys arranged on both sides of the existing digital keyboard, wherein the left side of the list of final keys is configured with 'an, ang', 'in, ing'. , 'en, eng', 'un, ue', on the right side of the list of vowels, 'ui, iu', 'ei, ie', 'ai, ia', 'ou, uo'. Similarly, ‘ao’ is placed on the ‘1’ key and ‘ong’ is placed on the ’0’ key.

Fig. 3 is a view showing a layout outline of a final keyboard according to a third embodiment of the present invention. As shown in FIG. 3, the final keyboard according to the third embodiment of the present invention is provided with two columns of final keys on the same side of the existing digital keyboard, wherein the left side of the list of final keys is configured with 'an, ang', 'in, ing'. , 'en, eng', 'un, ue', on the right side of the list of vowels, 'ui, iu', 'ei, ie', 'ai, ia', 'ou, uo'. Similarly, ‘ao’ is placed on the ‘1’ key and ‘ong’ is placed on the ’0’ key.

In addition to arranging the two columns of finals in different positions, you can also set the buttons in different columns. Fig. 4 is a view showing the outline of the layout of the final keyboard according to the fourth embodiment of the present invention.

As shown in Figure 4, a list of final keys is placed on the left and right sides of the numeric keypad. The vowel button on the left is used to configure 'en, eng', 'an, ang', 'uo, ou', 'ui, iu', and the vowel button on the right is used to configure 'in, ing', 'ei, ie', 'ai, ia', 'ue, un', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 5 is a view showing the outline of the layout of the final keyboard according to the fifth embodiment of the present invention. As shown in Figure 5, a list of final keys is placed on the left and right sides of the digital keyboard. The final key on the left is used to configure 'an, ang', 'en, eng', 'uo, ou', 'ui, iu', and the final key of the right is used to configure 'ai, ia', 'ei, ie', 'in, ing', 'ue, un', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 6 is a view showing a layout outline of a final keyboard according to a sixth embodiment of the present invention. As shown in Figure 6, a list of finals is placed on the left and right sides of the numeric keypad. The final key on the left is used to configure 'en, eng', 'an, ang', 'a0, ai', 'ie, ue', and the final key on the right is used to configure 'uo, ei', 'ui, iu', 'in, ia', 'ing, ong', configure 'ou' on the '1' key and 'un' on the '0' key.

Fig. 7 is a view showing the outline of the layout of the final keyboard according to the seventh embodiment of the present invention. As shown in Figure 7, a list of finals is placed on the left and right sides of the numeric keypad. The final key on the left is used to configure 'en, eng', 'an, ang', 'ai, uo', 'un, ue', and the final key on the right is used to configure 'ei, ie', 'ui, iu', 'in, ing', 'ou, ia', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 8 is a view showing the outline of the layout of the final keyboard according to the eighth embodiment of the present invention. As shown in Figure 8, a list of finals is placed on the left and right sides of the digital keyboard. The final key on the left is used to configure 'en, eng', 'an, ang', 'ou, uo', 'ue, un', and the final key on the right is used to configure 'ei, ie', 'ui, iu', 'ai, ia', 'in, ing', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 9 is a view showing the outline of the layout of the final keyboard according to the ninth embodiment of the present invention. As shown in Figure 9, a list of finals is placed on the left and right sides of the numeric keypad. The final key on the left is used to configure 'en, eng', 'an, ang', 'ou, uo', 'un, ue', and the final key on the right is used to configure 'ei, ie', 'ai, ia', 'ui, iu', 'in, ing', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 10 is a view showing the outline of the layout of the final keyboard according to the tenth embodiment of the present invention. As shown in Figure 10, a list of finals is placed on the left and right sides of the numeric keypad. The vowel key on the left is used to configure 'en, eng', 'an, ang', 'ue, un', 'ou, uo', and the vowel button on the right is used to configure 'ei, ie', 'ai, ia', 'ui, iu', 'in, ing', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 11 is a view showing the outline of the layout of the final keyboard according to the eleventh embodiment of the present invention. As shown in Figure 11, a list of finals is placed on the left and right sides of the numeric keypad. The final key on the left is used to configure 'en, eng', 'an, ang', 'ai, ia', 'ue, un', and the final key on the right is used to configure 'ei, ie', 'ui, iu', 'in, ing', 'ou, uo', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 12 is a view showing the outline of the layout of the final keyboard according to the twelfth embodiment of the present invention. As shown in Figure 12, a list of finals is placed on the left and right sides of the digital keyboard. The final key on the left is used to configure 'en, eng', 'an, ang', 'ou, uo', 'ui, iu', and the final key on the right is used to configure 'in, ing', 'ei, ie', 'ue, un', 'ai, ia', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 13 is a view showing the outline of the layout of the final keyboard according to the thirteenth embodiment of the present invention. As shown in Fig. 13, a list of final keys is provided on the left and right sides of the digital keyboard, respectively. The final key on the left is used to configure 'en, eng', 'an, ang', 'ou, uo', 'ue, un', and the final key on the right is used to configure 'in, ing', 'ei, ie', 'ui, iu', 'ai, ia', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 14 is a view showing the outline of the layout of the final keyboard according to the fourteenth embodiment of the present invention. As shown in Figure 14, a list of finals is placed on the left and right sides of the numeric keypad. The final key on the left is used to configure 'an, ang', 'in, ing', 'en, eng', 'un, ue', and the final key on the right is used to configure 'ui, iu', 'ei, ie', 'ai, ia', 'ou, uo', configure 'ao' on the '1' key and 'ong' on the '0' key.

Fig. 15 is a view showing the outline of the layout of the final keyboard according to the fifteenth embodiment of the present invention. As shown in Figure 15, a list of finals is placed on the left and right sides of the numeric keypad. The final key on the left is used to configure 'ai, ia', 'ei, ie', 'ui, iu', 'ou, uo', and the final key on the right is used to configure 'an, ang', 'en, eng', 'in, ing', 'ue, ong', configure 'ao' on the '1' key and 'ong' on the '0' key.

In addition, punctuation marks are set on each of the final keys, and the “ ^* ” key is set to “ALT”. When the Chinese character is input, the user presses the “ALT” key and then presses the final key to complete the punctuation. The input of the symbol. Press the vowel button again and the system automatically switches to the normal vowel input. In Chinese input, punctuation is mostly one input.

In addition, the "0" key is set to the fast switching key of the English input method. This allows the user to quickly complete the English input. After the button is pressed, the current input method is switched to the English input, and only when the button is pressed again, the original input method can be switched back. The “#” key is still the normal input method switching key, which means that the key can be used to switch between all the input methods provided by the system.

Fig. 16 is a view showing the outline of the layout of the final keyboard according to the sixteenth embodiment of the present invention. As shown in Figure 16, two columns of finals are placed on the right side of the digital keyboard. The first column of the final keys is used to configure 'an, ang', 'en, eng', 'in, ing', 'ao, ong', and configure 'ai, ia', 'ei, ie on the second column of the final keys. ','ui, iu', 'ou, uo'.

Fig. 17 is a view showing the outline of the layout of the final keyboard according to the seventeenth embodiment of the present invention. As shown in Figure 17, two columns of finals are placed on the right side of the numeric keypad. The first column of the final keys is used to arrange 'an, ang', 'ao, ong', 'en, eng', 'in, ing', and configure 'ai, ia', 'ou, uo on the second column of the final keys. ', 'ei, ie', 'ui, iu'.

Fig. 18 is a view showing the outline of the layout of the final keyboard according to the eighteenth embodiment of the present invention. As shown in Figure 18, two columns of finals are placed on the right side of the numeric keypad. The first column of the final keys is used to configure 'an, ang', 'in, ing', 'en, eng', 'un, ue'. Configure 'ui, iu', 'ei, ie on the second column of the final keys. ', 'ai, ia', 'ou, uo'.

With the final keyboard of the first to eighteenth embodiments, when the Chinese pinyin input is performed, when the final part is input, clicking the final key can call up the corresponding final option without having to perform multiple times as in the conventional input. The combination can be called up.

For example, when entering the word "王", when the initials "9 wxyz" is clicked, the candidate letters W, X, Y, Z appear on the screen, and then just click the button, "an ang" directly appears wan wang yan yang zan zang candidate pinyin The user selects wang and then selects the word to complete the input.

In the final keyboard shown in Figures 1 to 18, the original conventional digital keys are retained, and the input of the initials and the single finals is performed when the Chinese characters are input. Of course, the user can also use the traditional digital button to complete the input of the Chinese character.

In addition, in the above embodiment, the confusing sounds share a key, such as "an" and "ang", "en" and "eng", "in" and "ing", etc., so that the user is in the process of inputting You don't need too much resolution and recognition to complete the input, especially for some dialect users.

In addition, in the above embodiment, the vowels of similar morphology share one key, such as "ei" and "ie", "ai" and "ia", "ui" and "iu", etc., so that the user is in the process of inputting. In addition, in the above embodiment, the finals that do not share the same initial are shared by one key, reducing the matching frequency of the initials, reducing the user's selection of the pinyin combination, and improving the user's Input efficiency.

In the finals configured in the above embodiment, all the vowels "er" which are commonly used in accordance with the finals and cannot be combined with the initials, and the finals "ua" and "un" which are used less frequently are used, by means of the initials.

The above is only an embodiment of a final keyboard, and the invention of the input method includes any scheme for clicking the final key to call up the corresponding final option.

Figure 19 shows a combination of a physical final keyboard and a traditional physical ABC keyboard. The physical keyboard includes a pressing keyboard, a touch keyboard, a proximity keyboard, etc. (minimum touch pressure can be 0), and the final keyboard is not multiplexed with the traditional ABC keyboard. Physical button.

Figure 20 shows a combination of a virtual final keyboard and a traditional virtual ABC keyboard. The virtual keyboard includes a display by a screen such as a liquid crystal, a light-emitting matrix, an electronic paper, or the like, or displays by projection, etc., or one or the other is displayed. In the above keyboard combination, the input condition of the user is known by the sensing system, and the virtual key of the traditional ABC keyboard is not reused by the final keyboard.

Figure 21 shows a combination of a physical final keyboard and a traditional physical QWERTY keyboard that multiplexes the physical keys of a conventional QWERTY keyboard.

Figure 22 shows a combination of a physical final keyboard and a traditional physical QWERTY keyboard that multiplexes the physical keys of a conventional QWERTY keyboard and uses a final vowel that is not a full final.

Figure 23 shows a combined design of a final keyboard and a traditional ABC keyboard that reuses the keys of a conventional ABC keyboard.

Figure 24 shows the comparison of the total number of keystrokes when using the vowel keyboard and the traditional ABC keyboard traditional QWERTY keyboard for Chinese character input. As shown in Figure 24, the input test of 51 text messages (average 3205 words) shows that the average total number of keystrokes of the traditional abc keyboard and QWERTY keyboard is the same, and is significantly higher than the average total of the final keyboard. Number of keystrokes (t=12.08, p<.001, df=50). As can be seen from Fig. 24, the input method using the final keyboard is much more efficient than the conventional keyboard.

Figure 25 shows the comparison of the average total button distance when using the vowel keyboard and the traditional ABC keyboard traditional QWERTY keyboard for Chinese input. As shown in Figure 25, the input text of 51 text messages (average 3205 words) was tested. It can be seen that the QWERTY keyboard has the longest button distance, the traditional ABC keyboard is the second, and the final keyboard is the shortest. The difference between the three is very significant (F(2,100)=62.88, p<.001). After the multiple comparisons, the difference between the two is significant. The average total key-to-key ratio of the traditional ABC keyboard and QWERTY keyboard is higher than the final. The average total button distance of the keyboard is several orders of magnitude larger. It can also be seen from Fig. 25 that the input method using the final keyboard is much more efficient than the conventional keyboard.

The invention has been described above in connection with the preferred embodiments. It will be appreciated by those skilled in the art that various other changes, substitutions, and additions can be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention should not be construed as being limited to the specific embodiments described above, but by the scope of the appended claims.

1 is a schematic view showing a layout of a final keyboard according to a first embodiment of the present invention; FIG. 2 is a schematic view showing a layout of a final keyboard according to a second embodiment of the present invention; and FIG. 3 is a view showing a layout according to a third embodiment of the present invention. Schematic diagram of the layout of the final keyboard; FIG. 4 is a schematic view showing the layout of the final keyboard according to the fourth embodiment of the present invention; FIG. 5 is a schematic view showing the layout of the final keyboard according to the fifth embodiment of the present invention; A layout overview of the final keyboard of the sixth embodiment of the present invention; FIG. 7 is a schematic view showing the layout of the final keyboard according to the seventh embodiment of the present invention; and FIG. 8 is a view showing the outline of the layout of the final keyboard according to the eighth embodiment of the present invention. 9 is a schematic view showing a layout of a final keyboard according to a ninth embodiment of the present invention; FIG. 10 is a schematic view showing a layout of a final keyboard according to a tenth embodiment of the present invention; and FIG. 11 is a view showing the eleventh according to the present invention. Schematic diagram of the layout of the final keyboard of the embodiment; Fig. 12 is a schematic view showing the layout of the final keyboard according to the twelfth embodiment of the present invention; and Fig. 13 shows the thirteenth embodiment according to the present invention. FIG. 14 is a schematic view showing a layout of a final keyboard according to a fourteenth embodiment of the present invention; and FIG. 15 is a schematic view showing a layout of a final keyboard according to a fifteenth embodiment of the present invention; 16 is a schematic view showing a layout of a final keyboard according to a sixteenth embodiment of the present invention; FIG. 17 is a schematic view showing a layout of a final keyboard according to a seventeenth embodiment of the present invention; and FIG. 18 is a view showing an eighteenth embodiment according to the eighteenth embodiment of the present invention. Schematic diagram of the layout of the finals keyboard; Figure 19 shows a combination design of a physical final keyboard and a traditional physical ABC keyboard; Figure 20 shows a combined design of a virtual final keyboard and a traditional virtual ABC keyboard; Figure 21 shows a physical final A schematic diagram of a combined design of a keyboard and a conventional physical QWERTY keyboard; a schematic diagram of a combination of a physical final keyboard and a conventional physical QWERTY keyboard; and a schematic diagram of a combined design of a final keyboard and a conventional ABC keyboard; The figure shows a summary of the average total number of keystrokes for text input from three types of keyboards; Figure 25 shows the input of three types of keyboards for text. A summary of the average total button distance comparison; and Figure 26 is a layout of the digital keypad of the existing mobile phone.

Claims (25)

A keyboard comprises: on the same keyboard interface, a configuration separately arranged according to a key of an initial of a Chinese pinyin scheme according to a Chinese character pinyin scheme vowel key. The keyboard of claim 1, wherein the finals are finals other than a single final. The keyboard of claim 2, wherein the final ‘ao’ is disposed on the button '1’, and the final ‘ong’ is disposed on the button ‘o’. A keyboard as claimed in claim 3, wherein the finals other than the finals 'ao' and 'ong' are arranged in two columns. The keyboard of claim 4, wherein the two columns of vowels are respectively disposed on both sides of the digital keyboard. The keyboard of claim 4, wherein the two columns of vowels and the digits of the digits of the keyboard are interleaved. The keyboard of claim 4, wherein the two columns of finals are disposed on the same side of the digital keyboard. The keyboard of any one of claims 5 to 7, wherein the vowels of the confusing sound are set on the same button. A keyboard according to any one of claims 5 to 7, wherein the vowels of similar form are arranged on the same button. The keyboard of any one of claims 5 to 7, wherein the Chinese character punctuation marks are set on the keys on which the finals have been set. A keyboard according to any one of claims 5 to 7, wherein the '0' key is set as a button for switching the input method. The keyboard of claim 1, wherein the keyboard is a physical keyboard. The keyboard of claim 12, wherein the physical keyboard comprises a pressing keyboard, a touch keyboard, and a proximity keyboard. The keyboard of claim 1, wherein the keyboard is a virtual keyboard. A method for inputting Chinese characters by using a keyboard, the keyboard comprising: a button for configuring an initial according to a Chinese pinyin scheme and a button for configuring a final according to a Chinese pinyin scheme, the method comprising the steps of: pressing a button of an initial according to a Chinese pinyin scheme; Input initials; by pressing on the same keyboard interface, the configuration separately set in accordance with the initials of the Chinese pinyin scheme is input according to the finals of the Chinese pinyin scheme; and the input is based on the Chinese pinyin scheme. The initials and finals are recognized as corresponding Chinese characters. A method for inputting Chinese characters by using a keyboard, the keyboard comprising a button for configuring a final according to a Chinese pinyin scheme, the method comprising the steps of: separately setting on the same keyboard interface, setting a key according to the initial of the Chinese pinyin scheme; The configuration is based on the vowel of the Chinese pinyin scheme to input the finals; and according to the Chinese pinyin scheme, the input vowel is recognized as the corresponding Chinese character. The method of claim 15 or 16, wherein the final is a final other than a single final. The method of claim 17, wherein the final ‘ao’ is placed on the button '1’ and the final ‘ong’ is placed on the button ‘o’. The method of claim 18, wherein the finals other than the finals 'ao' and 'ong' are arranged in two columns. The method of claim 19, wherein the two columns of vowels are respectively disposed on both sides of the digital keyboard. The method of claim 19, wherein the two columns of vowels and the digits of the numeric keypad are interleaved. The method of claim 19, wherein the two columns of finals are disposed on the same side of the digital keyboard. The method of any one of claims 20 to 22, wherein the vowels of the confusing sound are set on the same button. The method of any one of claims 20 to 22, wherein the vowels of similar morphology are placed on the same button. The method of any one of claims 20 to 22, wherein the Chinese character punctuation is set on the button on which the final is already set.