CN111727431A - Electronic device, control method for electronic device, and program - Google Patents

Abstract

In the electronic device provided with a memory and a processor, the processor presents a question in an approval mode shifted from a normal mode by simultaneously operating a plurality of keys, receives an answer to the presented question from an operator, shifts to the normal mode when the answer of the operator matches a correct answer to the question, and shifts from the approval mode to a special function mode when the answer matches a password different from the correct answer to the question.

Description

Electronic device, control method for electronic device, and program

Technical Field

The present disclosure relates to an electronic apparatus, a control method of the electronic apparatus, and a program.

Background

A technique has been proposed that can use well log data as input simulation, i.e., a new input operation that does not require human hands at the time of simulation, and can reproduce the input operation at a place of use. (for example, patent document 1)

Documents of the prior art

Patent document

Patent document 1: JP-A-S63-193217

Disclosure of Invention

Problems to be solved by the invention

In addition to the technique disclosed in patent document 1, in various data processing apparatuses having a keyboard and a display unit, such as an electronic calculator, a smart phone, a personal computer, and the like, switching to a special function mode (e.g., an inspection mode, a serviceman mode, and the like) for executing a special function of a product by a predetermined key operation is not described on a specification of the product, and a general user cannot know, for example, that simultaneous operations of a plurality of preset keys are approved, so that in a state where manufacturing of the product is completed, the special function can be executed based on a special program registered in a part of an internal operation program. In the inspection mode, before or after the product is shipped from the factory, inspection may be performed based on an inspection program registered in advance in a part of the internal operation program.

However, a case may be caused in which the user perceives the switching method to the special function mode by a key operation for any reason and is thus able to execute the special function.

The present disclosure has been made in view of the above circumstances, and an object thereof is to provide an electronic apparatus, a control method of the electronic apparatus, and a program that can control a special function that is not easily executed.

Means for solving the problems

An electronic device includes a memory and a processor. The processor is configured to show a question in an approval mode, receive a reply to the shown question from an operator, and switch to a mode different from the special function mode when the reply from the operator is consistent with a correct reply to the question.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present disclosure, a special function that is not easily performed may be controlled.

Drawings

Fig. 1 is a front view illustrating an external configuration of a scientific electronic calculator according to a first embodiment of the present disclosure.

Fig. 2 is a block diagram showing a functional configuration of an electronic circuit of the scientific electronic calculator according to the first embodiment.

Fig. 3 is a flowchart describing the processing of the content in the approval mode of the first embodiment.

Fig. 4 illustrates display contents on the display unit of the first embodiment.

Fig. 5 illustrates transition of display contents on the display unit in the full inspection mode of the first embodiment.

Fig. 6 illustrates transition of display contents on the display unit in the simple check mode of the first embodiment.

Fig. 7 is a block diagram describing a functional configuration of an electronic circuit of a scientific electronic calculator according to a second embodiment of the present disclosure.

Fig. 8 is a flowchart describing the processing of the content in the approval mode of the second embodiment.

Fig. 9 illustrates transition of display contents on the display unit when switching to the special function control mode of the second embodiment.

Fig. 10 illustrates the transition of the display contents on the display unit in the full inspection mode of the second embodiment.

Fig. 11 illustrates the transition of the display contents on the display unit in the full inspection mode of the second embodiment.

Detailed Description

[ first embodiment ]

Scientific electronic calculators are one example of electronic devices. Hereinafter, a first embodiment in which the present disclosure is applied to a scientific electronic calculator will be described in detail with reference to the drawings as an explanation of an electronic apparatus, a control method of the electronic apparatus, and a program.

Fig. 1 is a front view illustrating an external configuration of a scientific electronic calculator 10 according to a first embodiment. In fig. 1, a key input unit 11, a display unit (display) 16, and a solar cell panel 17 are provided on the front surface of the main body.

The key input unit 11 includes: a number/calculation symbol key group 12 for inputting numbers and mathematical equations or instructions to perform calculations; a mathematical function key group 13 for inputting various mathematical functions and starting a memory function; a mode setting key group 14 for displaying menu screens of various operation modes and indicating operation mode settings; and a cursor key 15 for performing a moving operation of a cursor to be displayed in the display 16 on a setting operation of the mode setting key group 14, a calling operation of a calculation equation, a selecting operation of a data item, and the like.

The number/calculation symbol key group 12 includes [0] to [9] (number) keys, [ + ] [ - ] [ × ] [ div ] (four arithmetic operations) keys, [ Ans ] key, a [ ═ execution) key, and [ AC ] (clear) key for clear instruction, and the like.

The mathematical function key group 13 includes mathematical function keys including [ x ]^-1](reciprocal) bond, [ nCr ]](combination) bond, [ Pol ] (](polar coordinates) bond and [ x³](cube) keys, and the like.

The MODE setting key group 14 includes a SHIFT key, an ALPHA key, a MODE CLR key, and an ON key.

The display unit 16 is constituted by a reflective liquid crystal display panel, and includes a display line in which the uppermost line is a fixed segment such as [ D ], [ SCI ], etc., the second line is a dot matrix line of 6 vertical dots × 5 horizontal dots × 12 bits, and the third line is a numerical display line of a figure-8 segment which is a numerical part of 10 bits and an index part of 2 bits. The display unit 16 displays the operation result of the input keys by the operator as an inspector.

The solar cell panel 17 is a solar cell panel configured to generate a part or all of the operating power of the scientific electronic calculator 10. Although not shown, the scientific electronic calculator 10 has a replaceable battery separate from the solar panel 17. Therefore, even in the case where the amount of external light around the scientific electronic calculator 10 is small and thus the operating power required for display and calculation cannot be supplied through the single solar cell panel 17, power can be supplied through the installed battery.

Meanwhile, although not shown, the side or the back of the scientific electronic calculator 10 is provided with a card slot for attaching/detaching a memory card, and a communication terminal for performing communication with an external device (for example, a USB terminal) connected thereto.

Fig. 2 is a block diagram describing a functional configuration of an electronic circuit of the scientific electronic calculator 10.

The electronic circuit of the scientific electronic calculator 10 includes a processor 21 such as a CPU (central processing unit) as a main device, and a memory 22, a recording medium interface 24, a display unit 16, a key input unit 11, and a communication unit 25 connected thereto via a bus B. The processor 21 performs calculation according to the input operation so that the operator appropriately designates the number/calculation symbol key group 12 or the mathematical function key group 13.

The memory 22 includes a ROM in which an operation program, fixed data, and the like to be executed by the processor 21 embedded in the scientific electronic calculator (electronic device) 10 are stored in a nonvolatile manner, and a RAM in which various data read out from the ROM are to be developed and held. In the memory 22, an electronic calculator control program 22a, a display control program 22b, and a special function control program 22c are stored, and an input program area 22d and a work area 22e are secured.

The electronic calculator control program 22a is an operation program stored in the ROM, and the operation program is configured to execute various arithmetic processes including arithmetic function operations in the normal mode.

The display control program 22b is an operation program stored in the ROM, and the operation program is configured to control display contents on the display unit 16 in the normal mode.

The special function control program 22c is an operation program stored in the ROM, and the operation program is configured to be executed when switching from the normal mode to the special function mode. Specifically, the special function control program 22c includes a control program executed in the simple inspection mode (step S105), a management program executed in the entire inspection mode (step S107), and a control program executed in the display contrast adjustment processing mode (step S109), which will be described later.

The input program area 22d is an area in the RAM in which an additional program (to be described later) is stored when the additional program is input from the outside.

The work area 22e is an area in the RAM that temporarily holds programs and data when program processing is performed by the processor 21.

The recording medium interface 24 is an interface that is connected to a recording medium 23 such as a memory card mounted on the scientific electronic calculator 10 via the card slot CS, and reads data such as an additional program from the recording medium 23. Read data such as an additional program is stored in the input program area 22d of the memory 22 via the bus B under the control of the processor 21.

As described above, the communication unit 25 can be connected to an external device such as a personal computer in a wired manner through a communication terminal such as a USB terminal or the like, or connected to an external Network (NW) in a wireless manner through a wireless LAN, and is configured to transmit and receive necessary data and the like at the time of version upgrade of the scientific electronic calculator 10.

Subsequently, the operation of the first embodiment is described. In the following steps, the processor 21 performs processing and determination other than those explicitly described.

Fig. 3 is a flowchart showing processing contents stored in the special function control program 22c of the memory 22 in the approval mode.

In the operation in the normal mode before shipment of the scientific electronic calculator 10, when the operator as an inspector operates a plurality of predetermined keys as the approval password keys for switching to the approval mode, for example, three keys of the [ SHIFT ] key and the [ ON ] key of the mode setting key group 14 and the [5] key of the number/calculation symbol key group 12 are simultaneously operated, switching to the approval mode is performed. The approval password key is not limited to three keys, and may be, for example, two keys or four or more keys.

In the normal mode, the processor 21 waits for switching to the approval mode by repeatedly determining whether three keys are simultaneously operated (step S101).

When it is determined that three keys have been simultaneously operated (yes in step S101), the processor 21 shifts to the approval mode.

In the approval mode, the processor 21 randomly or periodically selects one from a plurality of simple questions prepared in advance by the special function control program 22c and displays it on the dot matrix row of the display unit 16 (step S103).

The problem is a mathematical equation (equality) or a mathematical inequality having a problem format including operators (e.g., +, -, ×, ÷) and numbers, and having a left-hand member that requires computation and indicating [? The right member of the equation, and the calculation equation is stored as data in the memory 22. A plurality of different modes are prepared, for example [ 3-2? Is, [1+ 1? Is, [2+ 1? Is [ 5-1? Etc., as mathematical equations or mathematical inequalities. The correct answers to the questions satisfy mathematical equations or mathematical inequalities (hereinafter, collectively referred to as "equations") of different patterns, respectively, and are different from each other, such as [1], [2], [3], and [4 ]. In the special function control program 22c, a plurality of passwords for switching to the special function control mode, a plurality of correct answers of values different from the plurality of passwords, and a plurality of questions corresponding to the plurality of correct answers are stored in advance as data, and the passwords can be input by the key operation of the operator through the key input unit 11.

Fig. 4 illustrates an aspect in which a problem [ 3-2? Is displayed on the dot array of the display unit 16 in the approval mode. Here, the correct answer to the question is the number 1. The input key to be the correct answer is set not to coincide with any of the cipher keys previously set for switching to the simple check mode, the full check mode, and the contrast adjustment mode as the special function control mode.

In the state where the question is displayed in step S103, the processor 21 receives a reply to the displayed question from the operator according to the key input on the key input unit 11. The processor 21 sequentially determines whether the operated key is a first cipher key (e.g., [8] key) which has been previously set as a number/calculation symbol key group 12 different from a correct answer to the displayed question (step S104), whether the operated key is a second cipher key (e.g., [9] key) which has been previously set as a second cipher key different from the correct answer to the displayed question and the first cipher key of the number/calculation symbol key group 12 (step S106), whether the operated key is a third cipher key (e.g., [6] key) which has been previously set as a different key from the correct answer to the displayed question, the first cipher key and the second cipher key (step S108), and whether the operated key is a number key (e.g., [1] key) of the correct answer to the displayed question (step S110).

When it is determined in step S110 that key input of a numeral as a correct answer to the question has been performed (no in step S104, no in step S106, no in step S108, yes in step S110), the processor 21 displays a text message [ TEST OK ] indicating that the input numeral is a correct answer on the dot matrix row of the display unit 16 for a predetermined period of time, for example, one second (step S111).

Thereafter, even if the numeric key is input as the correct answer, the processor 21 does not execute any of the simple check mode (step S105), the full check mode (step S107), and the display contrast adjustment processing mode (step S109), but executes the mode setting so as to forcibly return to the normal mode (step S112), and ends the processing of fig. 3.

Further, when it is determined in step S110 that the operated key is not any of the first cipher key, the second cipher key, the third cipher key, and the numeric key of the correct answer to the question (no in step S104, no in step S106, no in step S108), the processor 21 proceeds to step S112 and ends the processing in fig. 3.

When it is determined in step S108 that the operator has operated the third combination key of the number/calculation symbol key group 12 (no in step S104, no in step S106, yes in step S108), the processor 21 shifts to the display contrast adjustment mode of the display unit 16, which is one of the special function control modes (step S109).

In the contrast adjustment mode, the contrast value that has been set at this time is adjusted to an arbitrary value.

Specifically, after the contrast value that has been set at this time is displayed on the dot matrix row of the display unit 16, such as [ ] [ < ] h > ("+" is a contrast value), as shown in fig. 5 (F), the operation of the left and right direction keys of the cursor key 15 of the key input unit 11 by the operator is received to increase and decrease the contrast value, which is then reflected on the displayed contrast value.

After the contrast adjustment processing, when the operator performs a predetermined key operation, for example, operates the [ AC ] key of the numeral/calculation symbol key group 12, the processor 21 ends the contrast adjustment processing, proceeds to step S112 to perform mode setting so as to return to the normal mode after ending the contrast adjustment mode, which is one of the special function control modes, and then ends the processing in fig. 3. ON the other hand, when the [ ON ] key is operated before the [ AC ] key is operated to perform the end operation, the contrast value adjusted until just before is returned to the initial value.

When it is determined in step S106 that the second cipher key of the number/calculation symbol key group 12 has been operated (no in step S104 and yes in step S106), the processor 21 shifts to the full check mode, which is one of the special function control modes (step S107).

Fig. 5 illustrates the transition of the contents displayed on the display section 16 in the full inspection mode. Fig. 5 (a) to 5 (D) show displays in which the operator performs wiring inspection of the liquid crystal display panel of the display unit 16 with the naked eye. First, as shown in fig. 5 (a), if appropriate, all displayable segments of the display unit 16 are displayed.

When the operator operates the [ SHIFT ] key in the state in which all the segments are displayed, all the segments of the display unit 16 are turned to the state in which they are not displayed, as shown in (B) of fig. 5 (as applicable).

When the [ SHIFT ] key is additionally operated, a display mode [ alternate 1] is displayed as shown in (C) of fig. 5, if applicable, in which half of the segment of each bit on each row is opened. In this display state, the fixed segments are alternately displayed on the uppermost row. Further, in the plurality of dot matrices of the second row in which the respective segments are arranged in the vertical direction and the horizontal direction, dots (segments) vertically and horizontally adjacent to one displayed dot (segment) are not displayed, such as check marks. The number display line of the third line is displayed such that the displayed number is not an intended specific number, and comma symbols associated with the respective numbers are alternately displayed. In this case, regarding 7 segments (total of 8 segments) constituting the number 8 and one comma symbol, only four segments are numerically displayed, and 3 segments and one comma symbol are displayed on the next number.

Continuously, when the [ SHIFT ] key is operated, a display pattern of [ alternate 2] obtained by inverting [ alternate 1] is displayed as shown in (D) of fig. 5 (as applicable). Fig. 5 (C) and 5 (D) are display patterns for the naked eye of the operator to perform wiring inspection.

When the operator finishes the inspection of the wiring pattern with naked eyes, the operator operates a [ SHIFT ] key to display the code name of the ROM constituting the memory 22 in the scientific electronic calculator 10, as shown in (E) of fig. 5. The code name differs depending on the model of the scientific electronic calculator 10. Meanwhile, a pattern [ AC ] is displayed on the third row of the display unit 16 (omitted in (E) of fig. 5), thereby prompting the operator to press the [ AC ] key to switch from the display state to the next setting.

When the [ AC ] key is additionally operated, the contrast value that has been set for the display unit 16 at this time is displayed, as shown in (F) of fig. 5. As described in step S109, by receiving the operations of the right and left keys of the cursor key 15 of the key input unit 11, the contrast value can be increased and decreased. Meanwhile, a pattern [ AC ] is displayed on the third row of the display unit 16 (omitted in (F) of fig. 5), thereby prompting the operator to press the [ AC ] key to switch from the display state to the next setting.

Then, when the [ AC ] key is operated, a full key check state is generated as shown in (G) of fig. 5. Fig. 5 (G) illustrates a state in which the initial count value [00] is displayed at the left end of the lattice row in two digits.

When the operator operates the keys in a predetermined sequence, for example, all other keys are sequentially operated in a raster scan shape from the [ SHIFT ] key located at the upper left end of the key input unit 11, and the displayed count value is updated by "+ 1" every key operation except for the [ ON ] key as the power-ON key. The key operation order is set so that when any particular key is operated, the count value is updated according to whether or not the next set key is operated. Therefore, key operations other than the set order are invalidated and not counted.

If the connection of the wirings is correct, when the count value [49] corresponding to the total number of keys is displayed, the processor 21 determines that all the keys have been operated, and displays a text message [ TEST OK ] indicating that the full check mode has been completed on the dot matrix row of the display unit 16, as shown in (H) of fig. 5. Meanwhile, a pattern [ AC ] (omitted in (H) of fig. 5) is displayed on the third row of the display unit 16, thereby prompting the operator to press the [ AC ] key to switch from the display state to the next setting.

When the [ AC ] key is operated, the processor 21 proceeds to step S112 to execute mode setting for returning to the normal mode, and then ends the processing of fig. 3.

Further, in step S104 following step S103, when it is determined that the operator has operated the first combination key of the number/calculation symbol key group 12 (yes in step S104), the processor 21 shifts to a simple check mode which is one of the special function control modes (step S105).

Fig. 6 illustrates conversion of the contents displayed on the display section 16 in the simple inspection mode. Fig. 6 (a) and 6 (B) show displays for conducting a wiring inspection of the liquid crystal display panel of the display unit 16 with the naked eye. First, as shown in (a) of fig. 6, the processor 21 displays a display mode [ alternate 1] in which half of the segment of each bit on each row is turned on, as shown in (C) of fig. 5. In this display state, when the wiring connection is good, the fixed segments are alternately displayed on the uppermost row. In addition, when the wiring connection is good, dots are alternately displayed on the dot matrix row of the second row, similarly to the check mark. The number display line of the third line is displayed so that the displayed number is not an intentional specific number, and comma symbols associated with the respective numbers are alternately displayed when the wiring connection is good.

Continuously, when the [ SHIFT ] key is operated by the operator, the processor 21 displays a display mode of [ alternate 2] obtained by inverting [ alternate 1], as shown in (B) of fig. 6, like in (D) of fig. 5.

When the operator finishes the inspection of the wiring pattern with naked eyes and operates the SHIFT key, the processor 21 displays the code name of the ROM constituting the memory 22 in the scientific electronic calculator 10 as shown in (C) of fig. 6 like (E) of fig. 5. The code name differs depending on the model of the scientific electronic calculator 10. Further, a pattern [ AC ] is displayed on the third row of the display unit 16 (omitted in (C) of fig. 6), thereby prompting the operator to press the [ AC ] key to switch from the display state to the next setting.

When the operator further operates the [ AC ] key, the processor 21 displays an inspection image for key wiring as shown in (D) of fig. 6. As shown in (D) of fig. 6, several digits having two digits are intermittently displayed on the lattice row. When the wiring connection is good, as the operator operates the key of the corresponding numeral through the numeral/calculation symbol key group 12 of the key input unit 11, the corresponding numeral disappears sequentially.

When the displayed numbers are all the key inputs, it is assumed that the check of the key wiring has been completed, and the display for current measurement is performed, as shown in (E) of fig. 6. In fig. 6 (E), a number [8] in which the number of dots to be turned on is relatively large is displayed on each of the ten digits of the dot matrix row, and the number [8] of most segments rotated by the 8-shaped segment is displayed on each of the ten digits of the number display row together with the comma symbol of each three digit. In this display state as a reference mode, the internal consumption current is measured to check whether it deviates from a predetermined range of current values.

When the measured consumption current is within the predetermined range of the current value and thus it is determined that there is no specific problem, the processor 21 sets the power supply of the scientific electronic calculator 10 to be off (step S113), and ends the process of fig. 3.

In the simple inspection mode, unlike the full inspection mode, the processor 21 does not return to the normal mode after the end of the processing, but turns off the power of the scientific electronic calculator 10.

In this way, in the simple inspection mode, the power supply is automatically turned off immediately after the inspection processing. Therefore, in the re-inspection process of any product after the full inspection mode for all products, the number of inspection processes is reduced compared to the full inspection mode. Therefore, it is possible to simplify the operation, efficiently perform the operation, and suppress the consumption of the power supply mounted to the product at the time of shipment from the manufacturing plant to the minimum.

As described above, according to the first embodiment, in the approval mode, even when a user who does not know a password other than the examiner inputs a correct answer to the question through a key operation, the mode is not shifted to the special function control mode but is forcibly guided to the normal mode. Therefore, the user does not uselessly perform the special function control mode.

In the first embodiment, in the approval mode of the previous stage before switching to the special function control mode, in response to a simple question displayed on the display unit 16, a password key different from the correct answer key of the question and known only by qualified persons (e.g., examiners) is input. This makes it possible to accurately switch to the special function control mode and to perform processing for entering the special function management mode in a secret manner.

In addition, in the first embodiment, a simple question displayed on the display unit 16 at the start of switching to the special function control mode is selected from a plurality of questions prepared in advance. Therefore, the problem to be displayed is changed every time the key for instructing the switching to the special function control mode is specified, so that the pseudo effect can be further increased to avoid performing the actual key operation for switching to the special function control mode.

Further, in the first embodiment, the inspection processing is selectively executed corresponding to the key operation from among a plurality of types of inspection modes (such as a full-scale inspection mode and a simple inspection mode) different in the number of processings, contents, and the like of the inspection. Therefore, it is possible to select a more appropriate inspection mode and perform inspection based on a difference in necessity of performing inspection.

In the first embodiment, as the setting password key, the first password key, the second password key, and the third password key have been exemplified. However, the number of cipher keys provided may be one or two, and may be four or more, as necessary. In any case, the cipher key is a key other than the key corresponding to the correct answer to the question.

In the first embodiment, the processing is performed in the order of step S104 (and step S105), step S106 (step S107), step S108 (step S109), and step S110 (step S111). However, the present disclosure is not limited thereto. For example, the processing may be performed in the following order: in the order of step S104, step S106, step S110, and step S108; in the order of step S104, step S108, step S106, and step S110; in the order of step S104, step S108, step S110, and step S106; in the order of step S104, step S110, step S106, and step S108; in the order of step S104, step S110, step S108, and step S106; in the order of step S106, step S104, step S108, and step S110; in the order of step S106, step S104, step S110 and step S108; in the order of step S106, step S108, step S104, and step S110; in the order of step S106, step S108, step S110 and step S104; in the order of step S106, step S110, step S104, and step S108; in the order of step S106, step S110, step S108, and step S104; in the order of step 108, step S104, step S106, and step S110; in the order of step S108, step S104, step S110, and step S106; in the order of step S108, step S106, step S104, and step S110; in the order of step S108, step S106, step S110, and step S104; in the order of step S108, step S110, step S104, and step S106; in the order of step S108, step S110, step S106, and step S104; in the order of step S110, step S104, step S106, and step S108; in the order of step S110, step S104, step S108, and step S106; in the order of step S110, step S106, step S104, and step S108; in the order of step S110, step S106, step S108, and step S104; in the order of step S110, step S108, step S104, and step S106; or in the order of step S110, step S108, step S106 and step S104.

In the first embodiment, a plurality of questions are prepared in the approval mode. However, since keys other than the key for guiding the switching to the special function mode are set as the correct answers, the number of questions corresponding to the correct answers may be one.

In the first embodiment, correct answers to a plurality of questions prepared in the approval mode are different for each question. However, the partial correct answers may be the same between multiple questions.

Further, in the first embodiment, before the mode is approved, data of questions, correct answers to the questions, and a password key for guiding switching to the special function mode are stored in the memory 22 in advance, and the questions are displayed on the display unit 16 by the display control program based on the data. However, the special function control program 22c may also include a question preparation program configured to prepare a question that has not been set, and after switching to the approval mode, the processor 21 may also prepare a question and its correct answer according to the question preparation program and display the question and the like on the display unit 16.

In this case, after switching to the approval mode, the question may be prepared first and the corresponding correct answer may be set, or the correct answer may be set first and then the question corresponding to the correct answer is prepared. The present disclosure is not limited thereto. On the other hand, in a state where the correct answer and the password key are previously set before the approval mode, after switching to the approval mode, a question corresponding to the correct answer may be prepared by the question preparation program.

Further, before switching to the approval mode, data including an arithmetic equation having a parameter value (any value other than zero (0), for example, 1) and a correct answer (for example, 4) as a value other than the cipher key (such as [ value (correct answer-value K) + value K?) may be stored in advance in the memory 22 as a question preparation program.

In this case, after switching to the approval mode, the parameter value K may be set, a question may be prepared from an arithmetic equation (e.g., [3+ 1. The arithmetic equation stored in the problem preparation program may be plural, and one arithmetic equation may be determined before or after the mode is approved.

In the first embodiment, a question is displayed to the operator through the display unit, and then a password is input through key input. However, instead of the display on the display unit, the question may be displayed by voice, and the password may be input by the voice of the operator.

[ second embodiment ]

Hereinafter, a second embodiment applying the present disclosure to a scientific electronic calculator is described in detail with reference to the accompanying drawings.

The external configuration of the scientific electronic calculator 10' of the second embodiment is substantially the same as the scientific electronic calculator 10 shown in fig. 1 of the first embodiment, and the same components are denoted by the same reference numerals, and the description and illustration thereof are omitted.

Further, in the display unit 16, the uppermost row is set as a display row of a fixed segment, the remaining portion is mainly set as a dot matrix area of 31 vertical dots × 96 horizontal dots (in the drawing, dot arrangement is omitted), and arithmetic equations, solutions, guidance messages, and the like are generally displayed on four rows of the dot matrix area, except for displaying charts and the like.

Fig. 7 is a block diagram of a functional configuration of an electronic circuit of the scientific electronic calculator 10'. The basic configuration is substantially the same as that of the electronic circuit shown in fig. 2, and the same components are denoted by the same reference numerals, and the description thereof is omitted.

In the memory 22, an electronic calculator control program 22a, a display control program 22b, and a special function control program 22 c' are stored, and an input program area 22d, a work area 22e, and a use history storage area 22f are secured.

The special function control program 22 c' is an operation program stored in the ROM and executed when switching from the normal mode to the special function mode, and specifically includes a control program to be executed in the full-scale inspection mode (step S210) and a control program to be executed in the selection inspection mode (step S212), which will be described later.

In the use history storage area 22f, the use history after the power of the scientific electronic calculator 10' becomes on until the power becomes off, for example, is stored. As the usage history, there may be exemplified the number of times of switching to the approval mode, the number of times of correct answers to questions displayed in the approval mode, the number of times of operations of all keys other than the [ ON ] (power ON) key of the key input unit 11, specifically, the number of times of operations of the [ ═ execution) key, the number of times of errors occurring during the calculation, the usage time of power ON, the calculation mode used, the number of times of settings of the setting calculation unit and the like, the contents of some digital memories storing numbers, and the like.

As the usage time of the power-on, the time after the power-on is counted using a part of the time measurement operation performed in the processor 21 for the auto-power-off function.

The stored contents of the usage history storage area 22f are sequentially updated by the processor 21 in a state where the power is turned on, and are maintained in a nonvolatile manner even when the power is turned off.

Subsequently, the operation of the second embodiment is described. In the following steps, the processor 21 performs processing and determination other than those explicitly described.

Fig. 8 is a flowchart showing processing contents stored in the special function control program 22 c' of the memory 22 in the approval mode.

In the operation in the normal mode before shipment of the scientific electronic calculator 10', when the operator as an inspector operates a plurality of predetermined keys as the approval password keys for switching to the approval mode, for example, at the same time, three keys of the [ SHIFT ] key and the [ ON ] key of the mode setting key group 14 and the [5] key of the number/calculation symbol key group 12, switching to the approval mode is performed. The approval password key is not limited to three keys, and may be, for example, two keys or four or more keys.

In the normal mode, the processor 21 waits for switching to the approval mode by repeatedly determining whether three keys are simultaneously operated (step S201).

When it is determined that three keys have been simultaneously operated (yes in step S201), the processor 21 shifts to the approval mode.

In the approval mode, the processor 21 acquires information of the use history that has been stored in the use history storage area 22f of the memory 22 at this time (step S202).

The processor 21 randomly or periodically selects one of a plurality of simple questions prepared in advance by the special function control program 22 c' and displays it on the display unit 16 by using a part of the acquired information of the use history (step S203).

The problem is a mathematical equation (equality) or a mathematical inequality having a problem format including operators (e.g., +, -, ×, ÷) and numbers, and having a left-hand member that requires computation and indicating [? The right member of the equation, and the calculation equation is stored as data in the memory 22. A plurality of different modes are prepared, for example [ 3-2? Is, [1+ 1? Is, [2+ 1? Is [ 5-1? Etc., as mathematical equations or mathematical inequalities. The correct answers to the questions satisfy mathematical equations or mathematical inequalities (hereinafter, collectively referred to as "equations") of different patterns, respectively, and are different from each other, such as [1], [2], [3], and [4 ]. Here, each of [1], [2], [3] and [4] which is likely to have a correct answer is referred to as a "question corresponding key", and a key which becomes a correct answer to an indicated question is referred to as a "correct answer key".

In the special function control program 22 c', a plurality of passwords for switching to the special function control mode, a plurality of correct answers of values different from the plurality of passwords, and a plurality of questions corresponding to the plurality of correct answers are stored in advance as data, and the passwords can be input by the key operation of the operator through the key input unit 11.

Fig. 9 (a) illustrates an aspect in which a question [1+ 1? And if the operator desires, in the approval mode, [ Press AC ] indicating an input to stop the approval mode and return to the normal mode is displayed in the fourth line. Namely: [1] the question corresponding keys of [2], [3] and [4] are correct answer keys of [2 ].

In addition, based on a part of the information of the usage history, at the right end of the lattice area, the number of times of switching to the approval mode and the number of key inputs of the correct answer to the question are displayed in the form of a score "09/1 a" (number of correct answer inputs [9 ]/number of times of approval mode display [26]) by, for example, a hexadecimal number. The display range of (number of key inputs of correct answer)/(number of times of switching to approval mode) is set to 00/01 to FF/FF.

When it is determined in step S201 that the mode is switched to the approval mode, the number of times of display of the approval mode is updated to "+ 1" (yes in step S201). In step S213, the number of times of input of the correct answer is updated to "+ 1" while OK is displayed corresponding to the input of the correct answer key.

The number of times of switching to the approval mode and the number of times of inputting correct answers are displayed on the approval mode screen, so that when the scientific electronic calculator 10 'is subjected to maintenance at a manufacturing company or the like due to a malfunction or the like, it is possible to perceive the degree to which the user or the like of the scientific electronic calculator 10' is interested in the special function control mode, or the degree to which the user or the like has attempted to check.

Here, the problem [1+ 1? The correct answer is the number 2. All of the plurality of question corresponding keys including the correct answer key that becomes the correct answer are set so as not to coincide with any of the password keys that are previously set for switching to the full-check mode and the selection check mode as the special function control mode.

The processor 21 determines whether any key operation has been performed through the key input unit 11 in the state where the problem is displayed in step S203 (step S204). When determining that any key of the key input unit 11 has not been operated (no in step S204), the processor 21 determines whether a predetermined time, for example, 5 seconds, has elapsed in a state where the key operation to the question has not been performed (step S205).

When it is determined that the predetermined time has not elapsed in the state where the key operation for the question has not been performed (no in step S205), the processor 21 returns to the processing of step S204.

While repeatedly executing the processes of steps S204 and S205 in this manner, the processor 21 waits for any key of the key input unit 11 to be operated, and a predetermined time will elapse.

When it is determined that the predetermined time has elapsed in the state where the key operation for the question has not been performed (yes in step S205), the processor 21 stops the approval mode at that point in time, performs setting for forced return to the normal mode (step S217), and ends the processing shown in fig. 8.

Fig. 9 (B) illustrates an initial screen of the display unit 16 that has returned to the normal mode. In the initial screen, at the start position of the first row of the dot matrix area of the display unit 16, the inversion display is repeatedly performed in which the cursor C of the patterned vertical line or horizontal line is alternately displayed and erased every predetermined period (for example, 0.5 second) for causing the input calculation.

Further, when it is determined in step S204 that any key of the key input unit 11 has been operated (yes in step S204), the processor 21 sequentially determines: whether the operated key is a first cipher key (e.g., [9] key) of the number/calculation symbol key group 12, which is previously set to be different from a plurality of preset question corresponding keys including a correct answer key of the displayed question (step S206); whether the operated key is a second cipher key (e.g., [6] key) which is previously set to be different from a plurality of preset question corresponding keys including a correct answer key for the displayed question and the first cipher key of the numeral/calculator symbol key group 12 (step S207); whether the operated key is a numeric key (e.g., [2] key) for a correct answer to the displayed question (step S208); and whether the operated key is one of the [ AC ] key or a question corresponding key (e.g., [1] key, [3] key, and [4] key) other than the correct answer key (step S215).

When it is determined in step S208 that the correct answer key, which is the number of the correct answer to the question, has been input (no in step S206, no in step S207, yes in step S208), the processor 21 displays a text message [ TEST OK ] indicating that the input number is the correct answer on the first line of the dot matrix area of the display unit 16 for a predetermined time, for example, one second (step S213), as shown in (D) of fig. 9.

Then, the processor 21 assumes that the operator is not the inspector, and sets the lock flag held in the work area 22e in a nonvolatile manner to the on state so as to prohibit switching to the special function control mode (step S214). After that, the processor 21 performs setting for forced return to the normal mode (step S217), and ends the processing shown in fig. 8. Specifically, when the lock flag is in the on state, even if the first password key or the second password key is input, switching to the special function control mode such as the check mode is not permitted, as described later in steps S204, S206, and S207.

Further, when it is determined in step S208 that the key of the correct answer key which is not the number of the correct answer to the question has been input (no in step S206), the processor 21 proceeds to step S215. When it is determined in step S215 that the input key is the [ AC ] key or any of the plurality of question correspondence keys other than the correct answer key (step S215: YES), the processor 21 sets the normal mode (step S217), and ends the processing shown in fig. 8. On the other hand, when it is determined in step S215 that the input key is neither any of the plurality of question corresponding keys other than the correct answer key nor the [ AC ] key (no in step S215), the processor 21 assumes that the operator is the inspector, and sets the lock flag held in the nonvolatile manner in the work area 22e to the off state so as to release the switching prohibition of the special function control mode (step S216), and returns to the processing of step S204.

When it is determined in step S206 that the operated key is the first combination key (e.g., [9] key) preset as the number/calculation symbol key group 12 different from the correct answer key to the displayed question (yes in step S206), the processor 21 determines whether the lock flag has been set to the off state at that point in time (step S209).

When it is determined that the lock flag has not been set to the off state but has been set to the on state at this point in time (no in step S209), the processor 21 assumes that a number has been input as a correct answer to the question at an earlier time and that the operator is not an inspector at this point in time, performs setting of forced return to the normal mode without performing the processing of the full-scale inspection mode (step S217), and ends the processing shown in fig. 8.

Further, when it is determined in step S209 that the lock flag is set to the off state (yes in step S209), the processor 21 assumes that the operator is an inspector, and shifts to the full-inspection mode, which is one of the special-function control modes (step S210).

Fig. 10 and 11 illustrate conversion of contents displayed on the display unit 16 in the full inspection mode. Fig. 10 (a) to 10 (E) show displays in which an operator performs appropriate inspection of wiring conduction to the liquid crystal display panel of the display unit 16 with the naked eye. First, as shown in (a) of fig. 10, if appropriate, all displayable segments of the display unit 16 are displayed.

When the [ SHIFT ] key is operated by the inspector as the operator in the state of displaying all the segments, all the segments of the display unit 16 are turned to the state of not displaying them, as shown in (B) of fig. 10 (as applicable).

When the [ SHIFT ] key is additionally operated, if applicable, one frame is displayed by each dot on the outer peripheral side of the dot matrix region, as shown in (C) of fig. 10.

Continuously, when the [ SHIFT ] key is operated, if applicable, a display mode [ alternate 1] in which half dots in the dot matrix area are alternately displayed is displayed, such as a check mark, as shown in (D) of fig. 10.

Continuously, when the [ SHIFT ] key is operated, a display mode [ alternate 2] obtained by inverting [ alternate 1] is displayed, as shown in (E) of fig. 10. Fig. 10 (D) and 10 (E) are display patterns for an operator to perform wiring inspection with naked eyes in an appropriate case.

When the operator completes the inspection of the wiring pattern with the naked eye, the operator operates the [ SHIFT ] key to display the code name of the ROM of the memory 22 constituting the scientific electronic calculator 10' or the like, as shown in (F) of fig. 10. The code name differs depending on the model of the scientific electronic calculator 10'. Meanwhile, a mode [ Press AC ] for causing the key ([ AC ] key) to be operated to switch from the display state to the next setting is displayed on the fourth row of the dot matrix area. When the screen is switched from (a) of fig. 10 to (F) of fig. 10, the screen is not switched even if a key other than the [ SHIFT ] key is operated.

When the [ AC ] key is additionally operated, the contrast value that has been set for the display unit 16 at this time is displayed, as shown in (G) of fig. 10. As displayed on the third and fourth rows of the dot matrix area, the contrast value can be increased and decreased by receiving operations of the right and left keys of the cursor key 15 of the key input unit 11.

Then, when the [ AC ] key is operated, a key check state is displayed as shown in (a) of fig. 11. When the screen is moved from (G) of fig. 10 to (a) of fig. 11, the screen does not transition even if a key other than the [ AC ] key is operated. Fig. 11 (a) to 11 (C) illustrate a state in which the initial count value [00] is displayed with two digits at the left end of the first row of the dot matrix area.

When the operator operates the keys in a predetermined sequence, for example, all other keys are sequentially operated in a raster scan shape from the [ SHIFT ] key located at the upper left end of the key input unit 11, and the displayed count value is updated by "+ 1" every key operation except for the [ ON ] key as the power-ON key.

Fig. 11 (B) depicts the display state of the display unit 16 when the first [. multidot. ] key has been operated. The key operation order is set so that when any particular key is operated, the count value is updated according to whether or not the next set key is operated. Therefore, key operations other than the set order are invalidated and not counted.

Fig. 11 (C) depicts a display state of the display unit 16 in which the [ Ans ] key, which is the [48] th key among all 49 keys, has been operated. When the lower right [ ═ key of the key input unit 11 is additionally operated, the key checking process ends and the result of checking whether the wiring connection is correct is displayed as shown in (D) of fig. 11.

In fig. 11 (D), TEST OK indicating that the TEST has been completed is displayed on the first line of the dot matrix area of the display unit 16, and Reset All and Press AC for resetting the check result and causing the operation of the AC key for switching to the normal mode are displayed on the third and fourth lines, respectively.

Then, when the [ AC ] key of the key input unit 11 is operated by the operator in accordance with the display, the processor 21 completes the full-scale check mode in step S210, performs the setting of returning to the normal mode (step S217), ends the processing shown in fig. 8, and returns to the initial screen of the normal mode, as shown in (E) of fig. 11.

Further, when it is determined in step S207 that the operated key is the second cipher key (e.g., [6] key) of the number/calculation symbol key group 12 that has been preset to be different from the correct answer key of the displayed question (no in step S206, yes in step S207), the processor 21 determines whether the lock flag has been set to the off state at that point of time (step S211).

When it is determined that the lock flag has not been set to the off state but has been set to the on state at this point in time (no in step S211), the processor 21 assumes that a number has been input as a correct answer to the question at an earlier time and that the operator is not an inspector at this point in time, performs setting of forced return to the normal mode without performing the process of selecting the inspection mode (step S217), and ends the process shown in fig. 8.

When it is determined in step S211 that the lock flag is set to the off state (yes in step S211), the processor 21 shifts to a selection check mode that is one of the special function control modes (step S212).

Fig. 9 (C) depicts a flowchart for prompting the operator to select which of the inspection liquid crystal display panel ([1: Disp ]), the inspection ROM ([2: Ver/SUM ]), the inspection Key ([3: Key ]), and the inspection contrast ([4: Cont ]), the display on the first and second lines of the dot matrix area of the display unit 16 will be performed at the start of the selection of the inspection mode. In addition, a guide [ Press AC ] for releasing the selection of the inspection mode and causing a return to the normal mode is displayed in the fourth row of the dot matrix area.

When the [1] key of the key input unit 11 corresponding to [1: Disp ] is operated from the screen state shown in (C) of fig. 9, the processing as shown in (a) of fig. 10 to (E) of fig. 10 is executed. After the examination is ended, when the operator operates the [ SHIFT ] key, the processor 21 returns to the initial screen for selecting the examination mode shown in (C) of fig. 9.

When the [2] key of the key input unit 11 corresponding to [2: Ver/SUM ] is operated from the screen state shown in (C) of fig. 9, the processor 21 displays the code name of the ROM constituting the memory 22 of the scientific electronic calculator 10' and the like as shown in (F) of fig. 10. The code name differs depending on the model of the scientific electronic calculator 10'. Meanwhile, [ Press AC ] for causing the operation of the key ([ AC ] key) returning from the display state to the initial screen is displayed on the fourth row of the dot matrix area. After the end of the inspection, when the operator operates the [ AC ] key, the processor 21 returns to the initial screen for selecting the inspection mode shown in (C) of fig. 9.

When the [3] key of the key input unit 11 corresponding to the [3: key ] is operated from the screen state shown in (C) of fig. 9, a key check state is displayed as shown in (a) of fig. 11.

In the key check state, as described above with reference to (a) to (C) of fig. 11, when the operator sequentially operates all the other keys except the [ ON ] key as the power-ON key in a predetermined order in a raster scan shape, the displayed count value "+ 1" is updated every key operation. This operation is repeated until all 49 keys have been operated in the correct sequence. After the inspection is finished, when the operator operates the [ AC ] key in the screen shown in (D) of fig. 11, the processor 21 returns to the initial screen shown in (C) of fig. 9 in which the inspection mode is selected.

Further, when the [4] key of the key input unit 11 corresponding to [4: Cont ] is operated from the screen state shown in (C) of fig. 9, a contrast check state is displayed as shown in (G) of fig. 10. After the end of the inspection, when the operator operates the [ AC ] key, the processor 21 returns to the initial screen for selecting the inspection mode shown in (C) of fig. 9.

Further, when the [ AC ] key of the key input unit 11 is operated from the screen state shown in (C) of fig. 9, as shown in the fourth row, the processor 21 releases the selection check mode, performs setting to return to the normal mode (step S217), as shown in (E) of fig. 11, and ends the processing of fig. 8.

Meanwhile, in fig. 9 (a), the number of times of display of the approval mode screen and the number of times of input of the correct answer are displayed at the right end of the lattice area. Alternatively, other information may be displayed, such as information representing the usage history of the user of the scientific electronic calculator 10'.

Fig. 9 (E) illustrates a display screen at the start of the approval mode, instead of fig. 9 (a). Based on the partial use history information, an indication [ EXE 04] indicating that the [ ═ ] (execution) key has been operated four times, and an indication [02H ] indicating that the use time is 2 hours are displayed on the first and second rows of the dot matrix area. A part of the information of the usage history is also displayed at this point of time, so that the last minute usage of the scientific electronic calculator 10' can be easily perceived by the user when the operator is an examiner.

Meanwhile, as the information of the usage history, the total number of operation times of all keys of the key input unit 11, the number of times that an error occurs when a mathematical function equation is input (for example, total usage time), the number of times of switching of various calculation modes, the number of times of setting for switching an angle unit including a radian unit or a degree unit, for example, the contents of a separate memory or a variable memory in which numbers are stored in a nonvolatile manner, and the like are also considered. In addition, in addition to the state of displaying the question, the information of the use history may be displayed in the question display condition as shown in fig. 9 (a) to 9 (E), and may be switched from the screen of the normal mode in which it is displayed for a predetermined time at the upper right side of fig. 9 (a) to the screen in which all are turned off as shown in fig. 10 (a), in the transition state in which the power is turned off due to the simultaneous operation of the [ SHIFT ] key and the [ AC ] key.

As described in detail above, according to the second embodiment, when a user who does not know a password other than the examiner performs key input of a correct answer to a question in the approval mode, the lock flag is set to the on state. Therefore, even when a password key different from a correct answer to a question and known only to qualified persons (e.g., examiners) is accidentally input in response to a simple question displayed on the display unit 16, switching to the special function control mode due to the on state can be reliably prevented.

In the second embodiment, in the approval mode as the previous stage before switching to the special function control mode, there is provided a key input for turning off the setting, by which the examiner can release the lock flag from the state in which the lock flag has been set to the on state, so that the processing in the special function control mode of the scientific electronic calculator 10' in which the lock flag is set to the on state can also be performed.

Further, in the second embodiment, as part of the usage history, the number of times of display of the approval mode screen, the number of times of input of correct answers, the number of times of operation of keys, the usage time, and the like are also displayed at the end of the approval mode screen. Therefore, before switching to the special function control mode, the examiner can easily perceive a part of the use aspect of the scientific electronic calculator 10'.

Meanwhile, as described above, the first and second embodiments of applying the present disclosure to the scientific electronic calculator have been described. However, the present disclosure is not limited to scientific electronic calculators and other calculators, and can be applied to various electronic devices requiring special function control, such as smart phones, tablets, and general electric appliances, because a method for asking questions and a method for answering questions are provided.

In the present disclosure, a program may be applied in any method. The program may be stored in a computer-readable storage medium such as a floppy disk, a CD (compact disc) -ROM, a DVD (digital versatile disc) -ROM, a memory card, and the like for application. In this case, the scientific electronic calculator 10, 10' may be provided with an interface that can be connected to a storage medium. When the carrier wave is overlapped, the program may be applied through a communication medium such as the internet. For example, the program may be notified and transmitted on a Bulletin Board System (BBS) on the communication network. Further, the above-described processing can be performed by activating and executing a program in the same manner as other application programs under the control of an OS (operating system).

In addition, the present disclosure is not limited to the above-described embodiments, and various modifications may be made without departing from the gist thereof. Also, the respective embodiments may be implemented in appropriate combinations. In this case, a combined effect is achieved. Further, in the above-described embodiments, various inventions are included, and various inventions can be introduced by appropriately combining a plurality of constituent elements. For example, when the above-described problem is solved and the above-described effect is achieved even if some of all the constituent elements described in the embodiments are omitted, a configuration in which some of the constituent elements are omitted may be introduced as the present invention.

Meanwhile, the entire contents of japanese patent application No. 2018-24417 (filed on 14/2/2018) and japanese patent application No. 2018-215761 (filed on 16/11/2018) are incorporated in the present specification.

Description of the symbols

10, 10 '… scientific electronic calculator (electronic device), 11 … key input unit, 12 … number/calculation symbol key group, 13 … mathematical function key group, 14 … mode setting key group, 15 … cursor key, 16 … display unit, 17 … solar cell panel, 21 … processor, 22 … memory, 22a … electronic calculator control program, 22B … display control program, 22C' … special function control program, 22d … input program region, 22e … work region, 22F … use history storage region, 23 … recording medium, 24 … recording medium interface (I/F), 25 … communication unit, B … bus, C … cursor, CS … card slot.

Claims (33)

1. An electronic device, comprising:

a memory, and

a processor for processing the received data, wherein the processor is used for processing the received data,

wherein the processor is configured to:

show the question in the approval mode;

receiving a reply from the operator to the displayed question; and

switching to a mode different from a special function mode when the reply from the operator is consistent with a correct answer to the question.

2. The electronic device according to claim 1, wherein the mode different from the special function mode is a normal mode before switching to the approval mode.

3. The electronic device of claim 1 or 2, wherein the processor switches from the approval mode to the special function mode when the processor determines that the reply from the operator is consistent with a password different from the correct answer to the question.

4. The electronic device of claim 3, wherein the memory stores data including the password, a correct answer to a value different from the password, and a question corresponding to the correct answer.

5. The electronic device of claim 3 or 4, wherein when the reply from the operator is consistent with the correct answer to the question, the processor sets a lock flag to inhibit switching to the special function mode, and

wherein the processor switches to a mode different from the special function mode in a state in which the lock flag is set even when the reply from the operator coincides with a password different from the correct answer to the question.

6. The electronic device of claim 5, wherein the memory stores data including the password, a plurality of correct answers to values different from the password, and a plurality of questions corresponding to the plurality of correct answers, and

wherein the processor releases the setting of the lock flag when the reply from the operator is different from any one of a correct answer to a question shown by one of the plurality of questions, a password different from the correct answer to the one shown question, another correct answer to another question other than the one shown question of the plurality of questions, and a clear instruction.

7. The electronic device of any of claims 1-6, wherein the memory stores data of a usage history of the electronic device, and

wherein the processor is configured to show at least a portion of the data of the usage history with the issue in the approval mode.

8. The electronic device of claim 7, wherein the data of the usage history includes at least one of a number of times to switch to the approval mode, a number of times the reply from the operator is consistent with the correct answer to the question, and a time of use.

9. The electronic device of any of claims 1-8, wherein the special function mode comprises a check mode in which the electronic device is to be checked.

10. The electronic device of any of claims 1-8, wherein the special function mode includes a plurality of check modes that are different from one another.

11. The electronic device of any of claims 1-10, further comprising:

an input key with which the operator replies, an

A display configured to display an operation result of the input key.

12. The electronic device of claim 11, wherein the special function mode comprises a contrast adjustment mode in which a contrast of the display is to be adjusted.

13. The electronic device of any one of claims 1-12, wherein the approval mode is switched by entering a preset approval password.

14. The electronic device of any of claims 1-13, wherein the memory stores data for a plurality of questions, and

wherein the processor is configured to select a question from the data and show the selected question in the approval mode.

15. The electronic device of any of claims 1-14, wherein the problem is one of a mathematical equation and a mathematical inequality including operators and numbers.

16. The electronic device of any one of claims 1-15, wherein the processor is configured to perform calculations in accordance with digital input operations by the operator.

17. A method for controlling an electronic device is provided,

wherein the processor of the electronic device is configured to:

show the question in the approval mode;

receiving a reply from the operator to the displayed question; and

switching to a mode different from a special function mode when the reply from the operator is consistent with a correct answer to the question.

18. The control method of an electronic device according to claim 17, wherein the mode different from the special function mode is a normal mode before switching to the approval mode.

19. The method of controlling an electronic device according to claim 17 or 18, wherein the processor switches from the approval mode to the special function mode when the processor determines that the reply from the operator is consistent with a password different from the correct answer to the question.

20. The method of controlling an electronic device according to claim 19, wherein the electronic device includes a memory that stores data including the password, a correct answer of a value different from the password, and a question corresponding to the correct answer.

21. The control method of an electronic device according to claim 20, wherein when the reply from the operator coincides with the correct answer to the question, the processor sets a lock flag to prohibit switching to the special function mode, and

wherein the processor switches to a mode different from the special function mode in a state in which the lock flag is set even when the reply from the operator coincides with a password different from the correct answer to the question.

22. The method of controlling an electronic device according to claim 21, wherein the memory stores data including the password, a plurality of correct answers of a value different from the password, and a plurality of questions corresponding to the plurality of correct answers, and

wherein the processor releases the setting of the lock flag when the reply from the operator is different from any one of a correct answer to a question shown by one of the plurality of questions, a password different from the correct answer to the one shown question, another correct answer to another question other than the one shown question of the plurality of questions, and a clear instruction.

23. The method of controlling an electronic device according to any one of claims 20 to 22, wherein the memory stores data of a usage history of the electronic device, and

wherein the processor is configured to show at least a portion of the data of the usage history with the issue in the approval mode.

24. The control method of an electronic device according to claim 23, wherein the data of the usage history includes at least one of a number of times of switching to the approval mode, a number of times of the reply from the operator agrees with the correct answer to the question, and a usage time.

25. The method of controlling an electronic device according to any one of claims 17 to 24, wherein the special function mode includes a check mode in which the electronic device is to be checked.

26. The method of controlling an electronic device according to any one of claims 17 to 24, wherein the special function mode includes a plurality of check modes that are different from each other.

27. The method of controlling an electronic device according to any one of claims 17 to 26, wherein the electronic device further includes:

an input key with which the operator replies, an

A display configured to display an operation result of the input key.

28. The method of controlling an electronic device according to claim 27, wherein the special function mode includes a contrast adjustment mode in which a contrast of the display is to be adjusted.

29. The method of controlling an electronic device according to any one of claims 17 to 28, wherein the approval mode is switched by inputting a preset approval password.

30. The method of controlling an electronic device according to any one of claims 20 to 24, wherein the memory stores data of a plurality of questions, and

wherein the processor is configured to select a question from the data and show the selected question in the approval mode.

31. The method of controlling an electronic device according to any one of claims 17 to 30, wherein the problem is a mathematical equation including an operator and a number.

32. The method of controlling an electronic device according to any one of claims 17 to 31, wherein the processor is configured to perform calculation according to a digital input operation by the operator.

33. A program configured to be executed by a computer embedded in an electronic device and to enable the computer to:

show the question in the approval mode;

receiving a reply from the operator to the displayed question; and

switching to a mode different from a special function mode when the reply from the operator is consistent with a correct answer to the question.

Images