JPH0731477B2 - Data display method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data display system for displaying a desired character or the like on a display section including, for example, a liquid crystal display element in a so-called pocket computer or the like.

2. Description of the Related Art In general, a display unit of a small-sized electronic computer, which is a so-called pocket computer, is composed of, for example, a matrix drive type liquid crystal display device, and displays various data and numbers. In the case of such a small-sized computer, a character display area having a large number of digits can be displayed in one line. If such a display unit has a display capacity of, for example, 8 digits, if a character of 9 digits or more is to be displayed, then 8 digits are displayed from the beginning of the character string, and a character is displayed near the display unit of the small computer. For example, the provided character "→" is caused to emit light to inform that the character string to be displayed is not all displayed.

Problems to be Solved by the Invention In the conventional small-sized computer as described above, in order to notify that the data of the number of characters exceeding the display capacity of the display unit is displayed, the character “ A structure for performing a display operation other than the display unit such as a light emitting means of "→" shape is required, and the structure is complicated.

An object of the present invention is to solve the above-mentioned problems and to provide a data processing system having a significantly simplified configuration.

Means for Solving the Problems The present invention comprises a display means having a plurality of display areas in which charactors are individually and sequentially displayed from left to right, and the rightmost display area is the charactor. In addition to the arrow 53 pointing to the right, the leftmost display area can display the arrow 54 pointing to the left in addition to the charactor, and the number of charactors to be displayed can be displayed. When the number of display areas of the means is exceeded, first, the number of charactors that is one less than the number of display areas is displayed, and the rightward arrow 53 is displayed. Next, when the remaining charactors are displayed, The data display method is characterized in that the arrow 54 pointing to the left is displayed, and the arrow 53 pointing to the right is displayed when the number of the remaining characters exceeds the number smaller than the display area by two.

According to the present invention, the plurality of display areas of the display means can individually display the character,
It is provided sequentially from left to right, and if the number of characters of the information to be displayed exceeds the number of display areas,
First, the number of characters that is one less than the number of display areas is displayed, and the arrow 53 pointing to the right is displayed, whereby it can be known that the information to be displayed is further followed. The next time you display the remaining charactors, you will see a left-pointing arrow 54 that tells you that you are continuing on the previous line, and that the number of remaining charactors is two less than the number of display areas. When the number is exceeded, a right-pointing arrow 53 can be displayed to indicate that the character to be displayed will follow. The rightmost and leftmost display areas can not only show the character of the information to be displayed, but also the arrow pointing to the right.
53 and the left-pointing arrow 54 can be respectively displayed, and therefore, when the number of charactors exceeding the number of display areas is notified, it is not necessary to separately provide a structure for notifying such a state, and the structure can be simplified. You can

Embodiment FIG. 1 is a front view of a so-called pocket computer (hereinafter abbreviated as a computer) 1 which is a data processing device of an embodiment of the present invention, and FIG. 2 is a block diagram showing an electrical configuration of the computer 1. It is a figure. The configuration of the computer 1 will be described with reference to FIGS. 1 and 2. At one corner of the front plate 2 of the computer 1, there is provided a display unit 4 which is a display means and is realized by, for example, a liquid crystal display element (LCD). The display unit 4 is of a matrix drive type, for example, and has a display capacity of one line of 24 digits, for example.

In the vicinity of the display section 4, a character input key group 5 that is used when inputting characters such as item names when creating a table to be described later and that also functions as a so-called function key, and a numeric input that is a so-called numeric keypad A key group 6, an operator (for example, “÷”, “+”, etc.) instruction key group 7, a cursor key group 8 and the like are arranged. Further, the table function key 9 realizes a table data creating function described later, and the row instruction key 10 selects each row to be input in the data matrix when creating two-dimensional table data described later. Have a function. The column instruction key 11 also has a function of instructing the column to be input in the data matrix. Further, the exchange key 12 has a function of generating a data matrix in an arrangement mode corresponding to the transposed matrix of the data matrix with respect to the table data created as described later.

The computer 1 includes a central processing unit (hereinafter, abbreviated as CPU) 13 that controls various data processing of the computer 1. The CPU 13 is connected to the key input unit 14 including the character input key group 5 and the like, and the display unit 4 is connected via the display control unit 15. The display control unit 15 is provided with a display buffer 16 and temporarily stores data to be displayed on the display unit 4.

In addition, the CPU 13 includes a fixed storage unit 17 including, for example, a ROM (Read Only Memory) and a RAM, for example.
A storage unit 18 configured by (random access memory) or the like is connected. Fixed storage unit 17 and storage unit 18
Constitute a storage means.

The fixed storage unit 17 includes an initial program area 19 for storing an initial program for controlling the setting process when the computer 1 is started up, and an interpreter area for storing an interpreter program for a high-level language such as BASIC used in the computer 1. 20, a table processing program area 21 in which a program for performing table processing as described later is stored, and a CPU 13 in accordance with a key operation of the key input unit 14.
A CG program area 22 in which a program (hereinafter, abbreviated as a CG program) for generating a dot pattern of a display character corresponding to the code from the character code data input to the CG program area 22 and various other system programs are stored. System program area 23.

Further, the storage unit 18 is arbitrarily created by the operator of the computer 1.
It includes a user program area 24 for storing BASIC programs and various data, a table data area 25 for storing table data described later, and a system area 26 to which various buffers, counters or registers are allocated. In the system area 26, an h counter 27 which is a parameter corresponding to a title for identifying a plurality of tables, and a column direction position of each table, that is, an m counter 31 which is a parameter for identifying each row.
And an n counter 29 which is a parameter for identifying each column. Further, an F register 30 which is a set of row / column replacement completion flags set for each data in the table, an X register 31 used for this row / column replacement processing, and C, M, N, A, B Registers 33, 34, 35, 36, 37 are set respectively.

FIG. 3 is a flow chart for explaining the display processing on the display unit 4 in the computer 1 described above. The display processing of this embodiment will be described with reference to FIGS. 1 to 3. In step a1 of FIG. 3 (1), the data to be displayed, for example, a number string is input to the display unit 4 by using the number input key group 6, for example. Such display contents are stored in the key input buffer 47. In step a2, the system area 26 of the storage unit 18
The rightward flag and the leftward flag assigned to are reset to a logical value "0", for example.

In a succeeding step a3, it is determined whether or not the number of characters of the input display contents exceeds the display capacity of the display unit 4 (24 characters in this embodiment). If the number of characters to be displayed is 24 or less, the process proceeds to step a4, the input data is displayed on the display unit 4, and the display process ends.

If the number of displayed characters is 25 or more,
The determination in step a3 is negative and the process is step a5.
Move on to. At step a5, the 23 characters from the beginning are displayed on the display unit 4 for the character string stored in the key input buffer 47, and the character "→" 53 is displayed at the 24th digit. By displaying such a character “→” 53, it is notified that the character string currently displayed on the display unit 4 is not all the character strings to be displayed.

Next, at step a6, the rightward flag is set to logic "1" and the leftward flag is reset to logic "0". In step a7, the display start position pointer STARTCHR (hereinafter abbreviated as CHR) which indicates the character position where the display is started for the character string stored in the key input buffer 47 is set to "1".

In step a8, the key operated by the key input unit 14 is read, and in step a9, the read key is the cursor key group 8
It is determined whether the right key 48 is pressed, and if affirmative, the process proceeds to step a10 to determine whether the right direction flag is "1". At this moment, this judgment is affirmative, and the processing advances to step a11 shown in FIG. 3 (2). If the determination in step a10 is negative, it means that the display unit 4 has displayed the number of characters equal to or less than the display capacity of the display unit 4, the cursor 52 moves right by one character, and the process proceeds to step a8. Return.

If the determination in step a9 is negative, the process is step a1.
Moving to 2, it is judged whether or not the read key is the left key 51. If the determination is negative, the process returns to step a8, and if the determination is positive, the process proceeds to step a13.
In step a13, it is judged whether or not the leftward flag is "1", and if affirmative, the process proceeds to step a14 shown in FIG. 3 (2). If the determination is negative, the cursor 52 moves to the left on the display unit 4 by one character,
The process returns to step a8.

In step a11 of FIG. 3 (2), the data for 23 characters are displayed on the display unit 4, the character "→" 53 is displayed at the 24th digit, and the right key 48 is operated in addition. It is in a state. At this time, in step a11, the value obtained by adding 20 to the display start position pointer STC is set as the value of the new display start position pointer STC. In step a15, step a11
After the character of the key input buffer 47 indicated by the new display start position pointer STC defined in step 23, for example, 23 characters are displayed from the second digit of the display unit 4. The character "←" 54 is displayed at the first digit.

At step a16, it is determined whether or not the value obtained by adding 23 to the value of the display start position pointer STC at the present time has added the number of characters stored in the key input buffer 47. That is, the character currently displayed on the display unit 4 is
It is determined whether or not all the character strings stored in the key input buffer 47 have been displayed. If the determination result is affirmative, the process proceeds to step a17, the rightward flag is reset to logic "0", and the leftward flag is set to logic "1" at step a18. After that, the process returns to step a8 in FIG. 3 (1) to read the key input.

If the determination in step a16 is negative, it means that there is still a character string that is not displayed in the key input buffer 47, the process proceeds to step a19, and the character " → ”53 is displayed and the process proceeds to step a18.

In step a14 of FIG. 3 (2), step a17
Continuing from the process of step a, in step a8 of FIG.
This is the case where the read key is the left key 51. At this time, in step a14, the display start position decrements the value of the pointer STC by -20 to obtain a new value of the display start position pointer STC. In a succeeding step a20, it is determined whether or not the value of the display position start pointer STC is 1. That is, the display start position pointer STC changes to the key input buffer 4
It is determined whether the character in the first digit of 7 is designated. If this judgment is affirmative, the process returns to step a5 in FIG. 3 (1). That is, in the display unit 4, 23 characters from the beginning of the character string in the key input buffer 47
The character is displayed, and the character "→" 53 is displayed in the 24th digit.
Is displayed. On the other hand, if the determination result in step a19 is negative, the process proceeds to step a15.

Even if the number of characters to be stored stored in the key input buffer 47 in this way exceeds the display capacity of the display unit 4, the character "←" is displayed at the first digit or the 24th digit of the display unit 4. “54” or the character “→” 53 is displayed to clearly inform that the displayed contents are not all the desired character strings. Further, regarding the remaining characters in the key input buffer 47 other than the characters displayed on the display unit 4, the right key 48 or the left key 51 in the cursor key group 8 is also used.
Can be easily displayed using. In this way, the computer 1 according to the present embodiment can notify that the number of characters desired to be displayed exceeds the display capacity without additionally providing a structure for displaying other than the display unit 4, and the display cannot be completed. Characters can now be displayed with easy operations.

Effect As described above, according to the present invention, a display area is provided in which the characters of the information to be displayed can be individually and sequentially displayed from left to right, and the rightmost and leftmost displays are provided. The area is indicated by the arrow 53
When the number of characters of the information to be displayed exceeds the number of the display areas, the number of the display areas is reduced by one less than the number of the display areas. Display charactors,
And by displaying the arrow 53 pointing to the right, it is possible to know that the information to be displayed is further followed, and by displaying the arrow 54 pointing to the left when the remaining characters are displayed next time. , You can see that the displayed charac- ter continues to the previous information, and when the number of remaining charactors exceeds the number of display areas less by two, display a right-pointing arrow 53. In this way, it is possible to notify that the information to be displayed is further followed. Moreover, such rightward and leftward-pointing arrows 53, 54 can be displayed in the display area for displaying the characteristics of the information to be displayed. Therefore, in addition to the display area, a separate notification configuration is provided. There is no need, and the configuration can be simplified.

[Brief description of drawings]

FIG. 1 is a plan view of a computer 1 according to an embodiment of the present invention, FIG. 2 is a block diagram showing an electrical configuration of the computer 1, and FIG. 3 is a flow chart for explaining a display process of the computer 1. 1 ... Calculator, 4 ... Display, 14 ... Key input, 18 ...
… Memory, 26 …… System area, 47 …… Key input buffer, 48 …… Right key, 51 …… Left key, 52 …… Cursor, STC …… Display start position pointer

Claims (1)

[Claims] 1. A display means having a plurality of display areas in which the charactors are individually and sequentially displayed from left to right, and the rightmost display area has a rightward arrow 53 in addition to the charactors. The leftmost display area can also display an arrow 54 pointing to the left in addition to the charactor, and the number of charactors of the information to be displayed is the number of display areas of the display means. If the number of characters exceeds the number of display areas, the number of characters is reduced by one and the rightward arrow 53 is displayed. Next, when the remaining characters are displayed, the leftward arrow 54 is displayed. In addition, when the number of remaining charactors exceeds the number smaller than the display area by two, a rightward arrow 53 is displayed, which is a data display method.