JPH10254352A - Structural formula display device, structural formula display method, and recording medium recording display control program - Google Patents

Abstract

(57) [Summary] A structural formula display device for displaying a molecular structural formula frequently used in the field of chemistry.
Display the corresponding molecular structure easily. In a structural formula display process, an arbitrary molecular formula "C4 H10" is inputted by selecting and operating a character input key 12a and a numerical value / symbol key 12b of a key input section, and a liquid crystal display section 13 is displayed.
"Structural formula" key 1 in the same key input section
When 2d is operated, the molecular formula corresponding to the input molecular formula "C4 H10" is searched in the molecular formula corresponding structural formula ROM, and the structural formula stored in association with the input molecular formula,
And the name "butane", the presence or absence of an isomer / valence angle "isomer" is read and displayed, and further, when "isomer" is displayed together with the structural formula corresponding to the input molecular formula, When the "confirm" key 12e is operated, the structural formula of the isomer corresponding to the input molecular formula "C4 H10" is read out from the structural formula ROM for isomers and displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structural formula display device for displaying a molecular structural formula frequently used in the field of chemistry, a structural formula display method, and a recording medium storing a display control program.

[0002]

2. Description of the Related Art In general, in conventional electronic computing devices, computing devices capable of computing and displaying various functional expressions in addition to the usual four arithmetic expressions have been put into practical use. There is no computer capable of inputting the molecular formula of an arbitrary compound and easily displaying the correspondence of the molecular structural formula and the like.

[0003]

In a conventional electronic computer, when an attempt is made to perform a mathematical expression by mathematically examining a molecular formula, a coefficient is added to an atomic symbol to represent a set or a number of atoms. Are not treated as conventional functions at all, and there is a problem that a molecular formula or a molecular structural formula desired by a user cannot be easily displayed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has a structure display device, a structure display method, and a display capable of easily displaying a corresponding molecular structural formula for an arbitrary molecular formula. An object is to provide a recording medium on which a control program is recorded.

[0005]

That is, the structural formula display device according to claim 1 of the present invention comprises an input means for inputting a molecular formula, and individual atoms included in the molecular formula input by the input means. Display means for expanding and arranging via the number of bonds corresponding to the respective valences, and displaying as a structural formula corresponding to the inputted molecular formula.

That is, in the structural formula display device according to the first aspect of the present invention, when a molecular formula is input, individual atoms contained in the input molecular formula are connected to each other by the number of bonds corresponding to their respective valences. It will be displayed as a structural formula corresponding to the input molecular formula.

According to a fourth aspect of the present invention, there is provided a structural formula display device, comprising: a storage unit in which a plurality of molecular formulas and a structural formula corresponding to the molecular formula are stored in association with each other; Display means for reading out and displaying the structural formula corresponding to the molecular formula input by the input means from the storage means.

That is, in the structural formula display device according to claim 4 of the present invention, when a molecular formula is input, a structural formula corresponding to the input molecular formula corresponds to a plurality of molecular formulas and a structural formula corresponding to the molecular formula. The data is read out from the storage means that is additionally stored and displayed.

Further, in the structural formula display device according to claim 7 of the present invention, a plurality of molecular formulas and a structural formula of an isomer or a steric structural formula of a valence angle corresponding to the molecular formula are stored in association with each other. Storage means, input means for inputting a molecular formula, and display means for reading and displaying from the storage means a structural formula of an isomer or a three-dimensional structural formula of a valence angle corresponding to the molecular formula input by the input means. It is characterized by having.

That is, in the structural formula display device according to claim 7 of the present invention, when a molecular formula is input, the structural formula of the isomer or the three-dimensional structural formula of the valence angle corresponding to the input molecular formula is converted into a plurality of molecular formulas. Is read from the storage means in which the structural formula of the isomer corresponding to the molecular formula or the steric structural formula of the valence angle is stored in association with each other and displayed.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 shows a first embodiment of a structural display device of the present invention.
FIG. 2 is a block diagram illustrating a configuration of an electronic circuit of the electronic computing device according to the embodiment.

This electronic computing device includes a control unit (CPU) 11 composed of a computer or the like. Control unit (CP
U) 11 denotes key input data input from the key input unit 12 and a touch position of the touch pen P input from the tablet 14 provided on the display screen of the liquid crystal display unit 13 via the position detection circuit 15. Depending on the data, R
Activate a system program stored in the OM 16 in advance, or execute a computer control program stored in the external storage medium 20 in the storage medium reading unit 19.
The RAM 17 is used as a work memory to control the operation of each part of the circuit.

The control unit (CPU) 11 is connected to the key input unit 12, the liquid crystal display unit 13, the tablet 14, the position detection circuit 15, the ROM 16, the RAM 17, and the recording medium reading unit 19. Reference numeral 13 is connected via a display drive circuit 18.

The key input section 12 includes a character input key 12a composed of various English character keys "A, B, C,...", A numeric keypad "0-9" and operator keys "+,-, x,. ,
A numeric / symbol key 12b consisting of “=” is provided, and a “molecular formula” key 12c operated when displaying an input request screen for a molecular formula, and operated when displaying a structural formula corresponding to the input molecular formula. "Structural formula" key 12
d, if there is a structural formula of an isomer corresponding to the input molecular formula, display the structural formula of the isomer, and if there is a steric structural formula of a valence angle corresponding to the input molecular formula, A "confirmation" key 12e operated when displaying the three-dimensional structural formula of the valence angle, and a "@" cursor key 12f operated when moving a cursor on the display screen or selecting data. ↓ ”cursor key 12g,“ ← ”
A cursor key 12h, a “→” cursor key 12i and the like are provided.

The tablet 14 is provided on the display screen of the liquid crystal display unit 13 and generates a voltage signal corresponding to the position touched by the pen P. The coordinates corresponding to the display screen are detected by the position detection circuit 15 on the basis of the received voltage signal, and the control unit (CP
U) 11 determines the content of the operation.

The ROM 16 has a built-in system program ROM 16a which stores in advance system program data for controlling the entire processing in the electronic circuit of the electronic computer, and has a structural formula display process (FIGS. 4, 5 and 10).
A display control program ROM 16b in which display control program data for controlling the display control program (see FIG. 1) is stored in advance.

The ROM 16 includes a structural formula ROM 16c corresponding to the molecular formula (see FIG. 2) and a structural formula ROM 16 such as an isomer.
d (see FIG. 3) is also built in in advance. FIG. 2 is a structural formula ROM corresponding to a molecular formula built in the ROM 16 of the electronic computer.
It is a figure showing table data in 16c.

The structural formula ROM 16c corresponding to the molecular formula includes:
For each of the molecular formulas corresponding to each combination of atomic symbols in the periodic table, a table is provided for each of the molecular structural formulas, names, the presence or absence of isomer structural formulas, and the presence or absence of the valence angle three-dimensional structural formula. In the molecular formula corresponding information storage area of the molecular formula corresponding structural ROM 16c, when there is a structural formula of an isomer or a steric structural formula of a valence angle, the structure of the isomer is stored. The address data of the ROM 16d, such as the isomer, which is the storage destination of the formula or the steric structural formula of the valence angle, is also stored in association therewith.

FIG. 3 is a diagram showing table data in a structural formula ROM 16d such as isomers built in the ROM 16 of the electronic computer. This isomer isostructural formula ROM16
In d, the molecular formula corresponding to the address data stored and designated in the molecular formula-corresponding structural formula ROM 16c, and the molecular formula in which the structural formula of the isomer is present has the structural formula of the isomer and the steric structural formula of the valence angle. In the existing molecular formulas, the three-dimensional structural formulas of the valence angles are tabulated with their names and stored in advance.

The RAM 17 has a display register 17a in which display data to be displayed on the liquid crystal display 16 in the structural formula display processing is developed and stored as bitmap pattern data, and an input in which input data is stored. A data register 17b, for example, a memory of a structural formula ROM 16d such as an isomer indicating a storage destination of a structural formula of an isomer or a steric structural formula of a valence angle corresponding to a molecular formula read out from a ROM 16c corresponding to a molecular formula in a structural formula display process. An address register 17c for storing addresses, a work area 17d for temporarily storing data input / output by the control unit (CPU) 11 in connection with various control processes, and the like are provided.

Next, the operation of the electronic computer having the above configuration will be described. FIG. 4 is a flowchart showing a structural formula display process of the electronic computer. FIG. 5 is a flowchart showing the processing for displaying the structural formula of isomers and valence angles of the electronic computer.

FIG. 6 is a diagram showing a search and display state of the structural formula corresponding to the molecular formula and the isomer structural formula accompanying the structural formula display processing of the electronic computer. In accordance with the display control program stored in the ROM 16b, the structural formula display process is started, and an initial display screen for inputting a molecular formula is displayed on the liquid crystal display unit 13 (step S1). As shown in FIG. 6A, when the “molecular formula” key 12 c of the key input unit 12 is operated, the molecular formula input request message data “molecular formula?” That prompts the user to input a key of an arbitrary molecular formula is stored in the RAM 17. Is written to the display register 17a, and is displayed on the liquid crystal display unit 13 (step S2 → S3).

In the display state of the molecular formula input request message data "molecular formula?", The user operates the character input key 12a of the key input unit 12 as shown in FIG.
When the numerical formula "C4 H10" is inputted by selectively operating the numerical value / symbol key 12b and the arbitrary molecular formula "C4 H10", the inputted molecular formula "C4 H10" is stored in the input data register 17 in the RAM 17.
b and is written to the display register and displayed on the liquid crystal display unit 13 (step S4).

Thus, the molecular formula “C4 H1” selected by the user
When the “structural formula” key 12 d of the key input unit 12 is operated as shown in FIG. 6C in a state where “0” is input and displayed, the input data register 17 in the RAM 17 is operated.
The molecular formula corresponding to the input molecular formula "C4 H10" stored in b is searched for each molecular formula data stored in the molecular formula corresponding structural formula ROM 16c (see FIG. 2), and it is determined whether or not there is a correspondence ( Steps S5 → S6, S7).

In this case, the molecular formula corresponding to the input molecular formula "C4 H10" is the molecular formula corresponding to the molecular formula ROM16c.
Is stored at the address “3” in, and it is determined that there is a corresponding molecular formula. Then, this structural formula RO corresponding to the molecular formula
The name data "butane" and the isomer presence / absence data "isomer" are read out together with the structural formula data stored in association with the input molecular formula "C4 H10" retrieved at the address "3" of M16c. Are written to the display register 17a in the RAM 17 and displayed on the liquid crystal display unit 13 (steps S7 → S8). At this time, the address data “3A” of the isomer structural formula ROM 16 d indicating the storage destination of the isomer structural formula stored in association with the search area “3” of the input molecular formula is also read, and the address in the RAM 17 is read. It is stored in the register 17c.

In the process of searching for a molecular formula corresponding to the input molecular formula (steps S4 to S7), if the corresponding molecular formula is not searched, an approximate molecular formula containing the most atomic symbols constituting the input molecular formula is searched. Search,
The name data and the isomer / valence angle presence / absence data are read out together with the structural formula data corresponding to the approximate molecular formula, written into the display register 17a in the RAM 17 and displayed on the liquid crystal display unit 13 in the same manner as described above. (Step S7 →
S9).

In this manner, in the state where "isomer is present" is displayed together with the structural formula and name corresponding to the input molecular formula "C4 H10", it is desired to know the structural formula of the corresponding isomer. When the "confirm" key 12e of the key input unit 12 is operated as shown in FIG. 5, the structural formula display processing of isomers and valence angles in FIG. 5 is started (step S10 → SA).

Then, the address indicating the storage destination of the isomer structural formula stored in the address register 17d in the RAM 17 according to the isomer / valence angle existence data "isomer present" corresponding to the input molecular formula "C4 H10". Data "3
In accordance with A ", the structural formula data of the isomer corresponding to the input molecular formula" C4 H10 "and the name data" butane (isobutane) "are read out from the isomer isostructural ROM 16a (see FIG. 3). Display register 17 in RAM 17
and written on the LCD 13 (step A1 → A2).

FIG. 7 is a diagram showing a search and display state of a structural formula corresponding to a molecular formula and a valence angle three-dimensional structural formula accompanying the structural formula display processing of the electronic computer. In the display state of the molecular formula input request message data “molecular formula?” As shown in FIG. 7A (steps S1 to S3), as shown in FIG. When an arbitrary molecular formula "CH4" is input by selectively operating the numeral 12a and the numerical / symbol keys 12b, the input molecular formula "CH4" is stored in the input data register 17b in the RAM 17 and is also stored in the display register. The data is written and displayed on the liquid crystal display unit 13 (step S4).

Thus, the molecular formula “CH4” selected by the user
When the “structural formula” key 12 d of the key input unit 12 is operated in a state where is input and displayed, as shown in FIG. 7C, the input stored in the input data register 17 b in the RAM 17 is input. The molecular formula corresponding to the molecular formula "CH4" is
Each molecular formula data stored in the molecular formula corresponding structural formula ROM 16c (see FIG. 2) is searched to determine whether or not there is a correspondence (steps S5 → S6, S7).

In this case, the molecular formula corresponding to the input molecular formula "CH4" is stored at address "4" in the ROM 16c corresponding to the molecular formula, and it is determined that there is a corresponding molecular formula. Then, this structural formula ROM corresponding to molecular formula
In addition to the structural formula data stored in association with the input molecular formula "CH4" retrieved at the address "4" of 16c, the name data "methane" and the valence angle existence data "valence angle present" are read out. Then, the data is written into the display register 17a in the RAM 17 and displayed on the liquid crystal display unit 13 (steps S7 → S8). At this time, the isomer and other structural formula ROM 16 indicating the storage destination of the valence angle three-dimensional structural formula stored in association with the search area “4” of the input molecular formula.
d of the RAM 17 is also read out.
Is stored in the address register 17c.

In this manner, in the state where "with valence angle" is displayed together with the structural formula and name corresponding to the input molecular formula "CH4", it is necessary to know the structural formula of the corresponding isomer. When the "confirm" key 12e of the key input unit 12 is operated as shown in FIG. 5, the structural formula display processing of isomers and valence angles in FIG. 5 is started (step S10 → SA).

Then, in accordance with the isomer / valence angle existence data “valence angle present” corresponding to the input molecular formula “CH 4”, the storage destination of the valence angle three-dimensional structural formula stored in the address register 17 d in the RAM 17 is changed. In accordance with the indicated address data “4A”, the isomer isoform ROM 16a (FIG. 3)
), The three-dimensional structural formula data of the valence angle corresponding to the input molecular formula "CH4" and the name data "methane" are read out, written into the display register 17a in the RAM 17, and displayed on the liquid crystal display unit 13. (Step A1 → A
3).

Therefore, according to the electronic computer having the above configuration, in the structural formula display processing, the character input key 12a and the numerical value / symbol key 12b of the key input section 12 are selected and operated to input an arbitrary molecular formula "C4 H10". When the "structural formula" key 12d of the key input unit 12 is operated in a state of being displayed on the liquid crystal display unit 13, a molecular formula corresponding to the input molecular formula "C4 H10" is searched in the molecular formula corresponding structural formula ROM 16c. The structural formula stored in association with the input molecular formula, the name “butane”, and the presence / absence of isomer / valence angle “isomer present” are read out and displayed, and further correspond to the input molecular formula. When "isomer" is displayed together with the structural formula, when the "confirm" key 12e is operated, the structural formula of the isomer corresponding to the input molecular formula "C4 H10" is obtained. Is read and displayed, so that a structural formula, an isomer structural formula, a steric structural formula of a valence angle, etc. corresponding to an arbitrary molecular formula by user input can be quickly displayed and viewed with a simple operation. become.

In the first embodiment, the molecular formula corresponding to the molecular formula input by the user is replaced by the structural formula R corresponding to the molecular formula.
The structure is searched from the OM 16c, and the structural formulas stored together in association with the input molecular formulas are read out from the ROM 16c and displayed. As described in the following second embodiment, a configuration may be adopted in which constituent atoms of an input molecular formula are analyzed, and a corresponding structural formula is generated and displayed in accordance with the chemical rules of the molecular structure expression.

Further, in the first embodiment, the images of the structural formulas in the ROM 16c corresponding to the molecular formula and the ROM 16d such as the isomers are two-dimensional structural formulas. However, as shown in FIG. 8 and FIG. Alternatively, a structural formula ROM 16c2 corresponding to a molecular formula in which images of three-dimensional structural formulas K1 and K2 are stored and a structural formula ROM 16d2 such as an isomer may be used.

(Second Embodiment) FIG. 10 is a flowchart showing a structural formula display process of an electronic computer according to a second embodiment of the structural formula display device of the present invention.

FIG. 11 is a diagram showing a state in which a structural formula corresponding to a molecular formula is generated and displayed in accordance with a structural formula display process of the electronic computer according to the second embodiment of the structural formula display device of the present invention. Also in the case of the second embodiment, similar to the case of the first embodiment,
The control unit 11 including a computer or the like is controlled in accordance with the display control program stored in the display control program ROM 16b in the ROM 16, and executes the flowchart shown in FIG.

That is, in the display state of the molecular formula input request message data "molecular formula?" As shown in FIG. 11A (steps B1 to B3), as shown in FIG. Twelve character input keys 12a and numerical / symbol keys 12b are selectively operated,
When an arbitrary molecular formula “H 2 O” is input, the input molecular formula “H 2 O” is stored in the input data register 1 in the RAM 17.
7b and written in the display register and displayed on the liquid crystal display unit 13 (step B4).

Thus, the molecular formula “H 2 O” selected by the user
When the "structural formula" key 12d of the key input unit 12 is operated as shown in FIG. 11 (C1) in a state where is input and displayed, the input data register 17 in the RAM 17 is operated.
Among the atom symbols included in the input molecular formula "H2 O" stored in b, the atom "O" having the minimum number of atoms is detected (step B5 → B6).

Then, the display register 17 in the RAM 17
In contrast to “a”, “O” of one atomic symbol 30a as the minor atom is drawn and arranged at the center, and “H” of two atomic symbols 30b as multiple atoms is equally around (in this case, left and right). And “HOO-” of the structural formula 32 in which each symbol between atoms is drawn and bonded via the number of bonds (one in this case) according to the valence of the large number of atoms “H”.
H ”is generated and displayed on the liquid crystal display unit 13 (step B7).

Here, the valences of the atoms frequently used in the process of generating the structural formula (step S7) are as follows. H = 1, O = 2, N = 3, C = 4 That is, one bond 31 is used for the bond of “H”, and two bonds are used for the bond of “O”. "N"
The three bonds 31 are used for the connection of “C”, and the four bonds 31 are used for the connection of “C”.

In the display state of the molecular formula input request message data "molecular formula?" As shown in FIG. 11A (steps B1 to B3), as shown in FIG. 12 character input keys 12
a and the numerical / symbol key 12b are selectively operated to input an arbitrary molecular formula "CO2". The input molecular formula "CO2" is stored in the input data register 17b in the RAM 17.
And written in the display register and displayed on the liquid crystal display unit 13 (step B4).

Thus, the molecular formula “CO 2” selected by the user
When the “structural formula” key 12 d of the key input unit 12 is operated as shown in FIG. 11 (C 2) in a state where is input and displayed, the input data register 17 in the RAM 17 is operated.
Among the atom symbols included in the input molecular formula "CO2" stored in "b", the atom "C" having the smallest number of the atoms is detected (step B5 → B6).

Then, the display register 17 in the RAM 17
For “a”, “C” of one atomic symbol 30a, which is the minor atom, is drawn and arranged at the center, and “O” of two atomic symbols 30b, which are many atoms, are equal around (in this case, right and left). And “O = C =” in the structural formula 32 in which each of the atomic symbols is drawn and connected through the number of (in this case, four) bonds 31 according to the valence of the large number of atoms “O”.
O "is generated and displayed on the liquid crystal display unit 13 (step B7).

Similarly, for example, when the input molecular formula is “C
In the case of "H4", as shown in FIG. 7C, "C" of the atomic symbol 30a of the minor atom is arranged at the center, and this "C"
"H" of the atomic symbol 30b of a large number of atoms,
In addition to the horizontal direction, they are arranged in the vertical direction via the “one” bond 31 in accordance with the valence of the “H” of many atoms.

As a result, a structural formula 32 is displayed in which four “H” s centered on one “C” are arranged vertically, horizontally, and via a bond 31. For example, when the input molecular formula is "CH4" having a valence angle,
As shown in FIG. 7 (C), 4
FIG.
As shown in (D), four “H” s with one “C” as the center are combined as “CH 4” in the molecular formula at a predetermined valence angle of “109.5 °”. Hand 31
To thereby display a three-dimensional structural formula 32A having a valence angle.

Therefore, according to the electronic computer of the second embodiment, unlike the electronic computer of the first embodiment, the constituent atoms of the inputted molecular formula can be used without using a table data search system by ROM. Can be analyzed, and the corresponding structural formula can be easily generated and displayed according to the chemical rules of the molecular structure expression.

The method described in each of the above embodiments, that is, the structural formula display processing of the first embodiment shown in the flowcharts of FIGS. 4 and 5, the structural formula display processing of the second embodiment shown in the flowchart of FIG. In each of the methods, programs that can be executed by a computer include a memory card (ROM card, RAM card, etc.), a magnetic disk (floppy disk, hard disk, etc.), an optical disk (CD-ROM, DVD, etc.), a semiconductor memory, etc. It can be stored in the external recording medium 20 and distributed.
Then, the computer reads the program recorded on the external recording medium 20 by the recording medium reading unit 19, and the operation is controlled by the read program, whereby the display function of each structural formula described in each of the above embodiments is displayed. And the same processing by the above-described method can be executed. Further, in each of the above-described embodiments, the molecular formula is input to the various keys 12 a and 12 of the key input unit 12.
Although the input was made at b, the input may be made with the pen P.

[0050]

As described above, according to the structural formula display device according to the first aspect of the present invention, when a molecular formula is input, individual atoms included in the input molecular formula are converted to their respective valences. It is deployed and arranged via the corresponding number of coupling hands and displayed as a structural formula.

Further, according to the structural formula display device according to the fourth aspect of the present invention, when a molecular formula is input, the structural formula corresponding to the input molecular formula includes a plurality of molecular formulas and a structural formula corresponding to the molecular formula. Is read out from the storage means stored in association with and displayed.

Further, according to the structural formula display device according to claim 7 of the present invention, when a molecular formula is input, a plurality of isomers corresponding to the input molecular formula or three-dimensional structural formulas of valence angles are displayed. Is read out from the storage means in which the structural formula of the isomer corresponding to the molecular formula or the three-dimensional structural formula of the valence angle is stored in association with each other and displayed. Therefore, according to the present invention, it is possible to easily display a corresponding molecular structural formula for an arbitrary molecular formula.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an electronic circuit of an electronic computing device according to a first embodiment of a structural display device of the present invention.

FIG. 2 is a view showing table data in a molecular formula-compatible structural ROM stored in a ROM of the electronic computer.

FIG. 3 is a view showing table data in a structural formula ROM such as an isomer incorporated in a ROM of the electronic computer.

FIG. 4 is a flowchart showing a structural formula display process of the electronic computer.

FIG. 5 is a flowchart showing a structural formula display process of isomers and valence angles of the electronic computer.

FIG. 6 is a view showing a search and display state of a structural formula corresponding to a molecular formula and an isomer structural formula accompanying the structural formula display processing of the electronic computer.

FIG. 7 is a view showing a search and display state of a structural formula corresponding to a molecular formula and a valence angle three-dimensional structural formula accompanying the structural formula display processing of the electronic computer.

FIG. 8 is a view showing table data in another molecular formula-compatible structural formula ROM built in the ROM of the electronic computer.

FIG. 9 is a view showing table data in another structural formula ROM such as an isomer incorporated in the ROM of the electronic computer.

FIG. 10 is a flowchart showing a structural formula display process of an electronic computer according to a second embodiment of the structural formula display device of the present invention.

FIG. 11 is a view showing a state in which a structural formula corresponding to a molecular formula is generated and displayed in a structural formula display process of an electronic computer according to a second embodiment of the structural formula display device of the present invention.

[Explanation of symbols]

 11: control unit (CPU), 12a: character input keys, 12b: numeric / symbol keys, 12c: "molecular formula" key, 12d: "structural formula" key, 12e: "confirmation" key, 13: liquid crystal display unit, 16a ... System program ROM, 16b ... Display control program ROM, 16c ... Structural formula ROM corresponding to molecular formula, 16d ... Structural formula ROM such as isomer, 17a ... Display register, 17b ... Input data register, 17c ... Address register, 19 ... Reading of recording medium Part, 20 ... external recording medium, 30a ... centrally located atomic symbol, 30b ... peripherally located atomic symbol, 31 ... bond, 32 ... structural formula, 32A ... three-dimensional structural formula.

Claims (9)

[Claims] 1. An input means for inputting a molecular formula, and individual atoms included in the molecular formula input by the input means are deployed and arranged via a number of bonds corresponding to their respective valences. Display means for displaying as a structural formula corresponding to the input molecular formula. 2. An input step of inputting a molecular formula, and individual atoms included in the molecular formula input by the input step are deployed and arranged via a number of bonds corresponding to the respective valences. A display step of displaying as a structural formula corresponding to the input molecular formula. 3. When a molecular formula is input, individual atoms included in the input molecular formula are changed in response to the input.
A recording medium in which a display control program for displaying a structural formula corresponding to an input molecular formula is developed and arranged through a number of bonds corresponding to the respective valences. 4. A storage unit in which a plurality of molecular formulas and a structural formula corresponding to the molecular formula are stored in association with each other, an input unit for inputting a molecular formula, and a structural formula corresponding to the molecular formula input by the input unit. And display means for reading out and displaying from the storage means. 5. A storage unit for storing an input step of inputting a molecular formula, and a structural formula corresponding to the molecular formula input in the input step, in which a plurality of molecular formulas and structural formulas corresponding to the molecular formula are associated with each other. A display step for reading out and displaying the structural formula. 6. In response to input of a molecular formula, access is made to storage means in which a plurality of molecular formulas and structural formulas corresponding to the respective molecular formulas are stored in association with each other, and the input is performed. A recording medium recording a display control program for reading out a structural formula corresponding to a molecular formula from the storage means and displaying the read out structural formula. 7. A storage unit in which a plurality of molecular formulas and a structural formula of an isomer or a steric structural formula of a valence angle corresponding to the molecular formula are stored in association with each other; an input unit for inputting a molecular formula; Display means for reading and displaying from the storage means a structural formula of an isomer or a steric structural formula of a valence angle corresponding to the molecular formula inputted by the means. 8. An input step of inputting a molecular formula, and a plurality of molecular formulas and isomers corresponding to the molecular formulas are obtained by converting the structural formula of the isomer corresponding to the molecular formula or the steric structural formula of the valence angle corresponding to the molecular formula input in the input step. A display step of reading out from a storage unit storing the structural formula or the three-dimensional structural formula of the valence angle in association with the structural formula and displaying the structural formula. 9. When a molecular formula is input, a plurality of molecular formulas and a structural formula of an isomer or a steric structural formula of a valence angle corresponding to the molecular formula are stored in association with each other. A recording medium in which a display control program for accessing a storage means and reading out and displaying a structural formula of an isomer or a three-dimensional structural formula of a valence angle corresponding to the input molecular formula from the storage means is provided.