JPS59131970A - Electronic type calculation practicing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention is an electronic calculation practice machine, in particular, a learner such as a child calculates calculation problems automatically created and displayed inside the practice machine by hand, and inputs the results using keys on the practice machine. The present invention relates to an electronic calculation practice machine that is configured to input information and compare it with the correct answer. Various calculation practice machines have been proposed in the past, some of which are already commercially available. A typical example is "Little Professor" (trade name) manufactured by Texas Instruments Inc. in the United States. In this device, practice questions are automatically created inside the device, the user solves the created practice questions by hand, inputs the results into the device from the key input section, and compares the correctness of the answers. When a predetermined number of questions are completed, the score for the correct answer is displayed. An object of the present invention is to improve the above conventionally proposed or commercially available devices to provide a calculation practice machine that is easy for users such as children to operate. According to an embodiment of the invention, calculation problems are automatically created;
In an apparatus comprising a display means for displaying the question, an input means for inputting an answer calculated by the learner himself, and a means for determining whether the inputted answer is correct or not and notifying the result, the display means is It has a two-stage configuration of a multi-digit display section, and the display means is configured to display various information other than the question display, and the score of the correct answer is displayed on a 100-point scoring system, The specified number of questions, number of correct answers, and question group number are displayed. In addition, in order to make it easier to understand whether the answer is correct or incorrect, the display means blinks and an alarm sounds. Further, all the digits of the numerical value of the answer obtained by the learner by hand calculation etc. are input into the device using the key input section and stored, and then a comparison judgment is made by operating the correct/incorrect judgment instruction key (ffi key). A slide switch is provided to set the difficulty level of the calculation problem, and after the difficulty level is set using the slide switch, the number of digits of the calculation problem that will be asked now is displayed by the display means, such as 100+00J. Is displayed. A switch is provided to select the number of calculation problems, and by operating the selection switch, the number of problems is "10" r25J
A selection of r'100J is made. Numerical keys, oral η keys, and LOWER MASTER 0 [Q keys are provided as input means for the learners to calculate answers by themselves, and there is a counting means that counts and stores the number of correct answers in relation to the combined operation of these two keys. Perform counting operations selectively. In order to repeatedly select the same group of practice questions, a specific practice question is generated by the combination of the numerical keys and the [EEED key. An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an external view of the electronic calculation practice machine of the present invention, showing a display section, a key operation section, a memo width section, and a difficulty level table. A bookcase-type training device consisting of a writing instrument section is shown. In the figure, the inside of the main cabinet 1 contains a power supply unit, electronic circuits, etc., and on the inside surface there is a multi-digit, two-level display unit 2 for displaying calculation problems, answers, and other information, and a display unit 2 for adding, subtracting, multiplying, and dividing. Type selection switch 3, number of questions selection switch 4, power on/off and problem difficulty selection switch 5, input key section 6 consisting of a group of numeric keys and function keys such as ward - bow lower door i, type of problem and difficulty. It has a skin surface of 7. In addition, the inner surface of the lid cabinet 8 has a memo base 9 such as a magic notebook and a writing instrument] 0,
Both cabinets 1 and 8 are connected by a hinge 12 so as to be openable and closable. Further, a power switch 11 is provided in the main cabinet 1, which is turned on and off as the cabinet 1.8 is opened and closed, and the power switch 11 is turned on when the cabinet 1.8 is opened. FIG. 2 shows a circuit configuration diagram of an embodiment of the present invention, and the main parts are a processor, a read-only memory (R
It is composed of a one-chip integrated circuit device (LSI) 21 having a read-only memory (ROM) and a random access memory (RAM), and the read-only memory (ROM) is microprogrammed according to the functions described later.
M is programmed in a firmware manner. The integrated circuit device (LSI) 21 has power terminals GND and VD.
To the D+ input terminal! ~Display segment information output terminal S
, ~S7 and timing signal output terminal Ro"'-Ru
+ R14 to R15. The display section 2 has a two-stage structure of 10-digit fluorescent displays DPI and DP2, and the shape of the display segment electrode of each digit is shown in FIG. In FIG. 3, the display electrodes of the upper display DPI have the lowest to fourth digits shaped like a "Japanese" character, the fifth digit shaped like a ``1 desk'' to indicate symbols for addition, subtraction, multiplication, and division, and the sixth to ninth digits shaped like a ``Japanese'' character. It has a ``Japanese'' character shape, and the most significant digit is a symbol that indicates whether the calculation result is correct or incorrect. In addition, the lower display element x 1 The display electrode of DP2 has the lowest digit to the 6th digit in the shape of "1st day", the 7th digit to the symbol "-", the 8th digit to the blank digit, the 9th to 1st digit
The 0 digit is the 1st day. Further, each display electrode is classified into 81 to S7, and the corresponding electrodes are commonly connected. In FIG. 2, the heaters H1 and R2 of the display bodies DPI and DP2 are lit by independent AC power supplies T1 and T2, respectively, but the potential of the heater H1 of the display body DP1 is -V only when the transistor Trl is in a conductive state. Similarly, the potential of the heater H2 of the display body DP2 becomes -V only when the transistor Tr2 is conductive, and becomes the ground level via the resistors R1 and R2 when the potential -2 is not applied. The corresponding segment electrodes of the display electrodes of each digit of the display bodies DPI and DP2 are connected to each other as described above, and receive voltage supply of display information from the output terminals S and %S7 of the LSI 21. Display body DPI, DP2 grid GIG""'GI9 and G20"G29 first
The digit grids GtO and G20 are connected to the timing signal output RO of the LSI 21, and the 9th digit grid GI8 is also connected to the timing signal output RO of the LSI21.
and G2g are the timing signal output 1 and 8, and the 10th digit grid GI9 and G2 (1 is the timing signal output R
9, respectively. The timing signals R8 to R0 and RIo+R11 outputted from the LSI 21 are digit time signals that define each digit of numerical information, and as shown in FIG. 4, they are signals whose phases are shifted from each other. Further, the timing signals RI4 and R11+ are the timing signals D0 to R1 as shown in FIG.
This is a word time signal with different phases from each other that is inverted every 12 digit times of +, and this signal causes transistors Trl and Tr2 to become conductive alternately every 1 word time, and output from terminals 81 to S7 of LSI 21. Display information to be displayed is distributed to the display bodies DPI or DP2 for each word time and displayed. The power supply part I includes an external power jack A1, a battery power supply B1, a power supply switch S1 (switch 11 in FIG. 1) and a power switch B2 (on/off contact of the changeover switch 5 in FIG. 1) connected in series to the power supply circuit, and a DC-DC A switching transistor Tr3, an oscillation transistor Tr4, a starting resistor R7, a limiting resistor R8, which constitute the converter,
It is composed of a Zener diode ZD for oscillation control, efficiency increasing capacitors Ct and C2, ripple capacitor C3, rectifying diodes D]~D3, smoothing capacitors 04~06, etc., and the heater AC voltage is
DC negative potentials vDD, -v, -v' are supplied. Note that the above-described power supply unit I has a generally well-known circuit configuration and is not directly related to the gist of the present invention, so further explanation will be omitted. The changeover switches 3, 4, 5 and the input keys 6 shown in Fig. 1 are all arranged in a matrix using the strobe key system, and the numerical keys 4 to (9) are each mounted on an LSI 2.
The input terminal is connected to receive signals from the timing output terminals R6 to R9 of 1 and to supply a timing signal corresponding to the key pressed to 1 to the input terminal. Similarly, the Coraloco and W keys are connected to receive timing signals from output terminals R6 to R5, respectively, and to supply a predetermined (9) timing signal to input terminal 2. Further, the problem difficulty level changeover switches ① to ② are connected to receive timing signals from output terminals R8 to R1, respectively, and to supply a predetermined timing signal to input terminal 3. Similarly, the question type changeover switch marked 9 days, the field and the question number changeover switch [E] + - large mouth are output terminals R6+, respectively.
R7+ is connected to receive the timing signals of R8 and R10+R11, and to supply a timing signal corresponding to the switch set to 4 to the input terminal. Note that the output terminals RO"R11+RI4~RIl+ and the input terminals 1~4 are clamp resistors r.-r1□ and r12~r
15 to the potential -V'. In the above configuration, for example, when key (2) is pressed, a timing signal output from output terminal R2 is sent to the terminal 1.
key (2) inside the LSI21.
It is decoded that the button was pressed. Similarly, if the switch date and Kokushi are set, the timing signal output from terminals R6 and RIG is input to terminal 4, so L
It is determined that the Nuitch date and logo are set in SI21. Note that no timing signal is input to switches 09 and 1, but the settings of these keys are such that a timing signal is not input to terminals 3 and 4 inside the LSI 21 when the power is turned on, etc. Judge,
It is recognized that the above switch is set. FIG. 5 shows an example of the internal configuration of the integrated circuit device (LSI) 21 shown in FIG. 2. As shown in FIG. In the figure, the LSI 21 includes an arithmetic control section 50 for arithmetic and new control, and an address counter 52 for specifying the address of a memory location in a read-only memory (ROM) 51 that stores microprogram instructions. ROM 51 is programmed in a generally known manner according to the functions described below, and can be efficiently programmed in firmware form, for example by selectively retaining or omitting memory functions. LSI21
Internal timing is generated by an oscillator 53, a timing circuit 54 that generates the timing signal described above, and a display control signal generation circuit 55. Input signals from the key input unit and each selection button are applied to the LSI 21 via terminals 1 to 4, and these signals are input using a generally known key strobe method.
It is identified according to the output from the ROM 51 and converted into a code signal corresponding to each key. The LSI 21 further has a random access memory (RAM) 57, which stores data and the internal state of the LSI 21. RAM57
If the information stored in the memory address specified by the address counter 58 controlled by the ROM 51 is transmitted to the arithmetic control unit 50 and displayed,
Data introduced into the arithmetic control section 50 is sent to a terminal S via a segment decoder section 59 and a buffer circuit 60. -82
It is output as display segment information. The pulse from the output terminal RO"R11 scans the display digits or key input section and the selection switch group as shown in FIG. It is given to the input section 56. FIG. 6 shows the internal configuration of the RAM 57 in FIG.
The RAM 57 is composed of eight memories (A-H) each having a storage capacity of 16 digits (one digit is 4 bits). FIG. 7 further shows the internal state assigned according to each piece of storage information in the RAM 57 in FIG. 6 when practice questions are being generated and displayed, and FIG.
When operating EI Kokii and completing a series of practice problems, the number of points is 9. It shows the internal state of the RAM 57 when the correct answer number 1 is displayed. In FIG. 7, memory A of RAM 57. ~A9 and B(
1-B is used as a display register, AO and B correspond to the first digit, A9 and Be correspond to the 10th digit H. The detailed breakdown is as follows: symbol “O1×” display register J (A9) (○... code 6, ×... code 1), operand display register AD (A6 A8)
, function symbol display register F D (A4)
(+...Code 10.-Code 11, ×...Code 12.÷...Code 13), register BD for displaying the number of operations (Ao-A3), register MOD for displaying the number of questions (B
s~B, ), "-" symbol display register EQ (Be) (
=...Code 11), answer display register ASD
(Bo-Bs), and the contents of these registers are displayed on the display section 2. The answer storage register AS (Go~G!,) stores the calculation result calculated in the calculation register. A number “1” is added to the problem number storage register MO (Gs to G, .) each time a problem occurs, and its contents are stored in register M.
It is transferred to OD and displayed. The practice number storage register L (H12 to H+s) is a register for saving a preset practice number (practice problem group number), and its contents are set by operating the numeric keys and start key as described later. When turned on, it is set to "1". The register 5E (F8 to Fto) for storing the number of correct answers stores the number of correct answers, and the contents of the registers ASD and AD are compared in the arithmetic control unit 50 for each practice problem, and if they match, the value "1" is set in the register SE. Be added. The total number of questions storage register TM (Ha to H+o) stores the contents specified by the number of questions changeover switch 4. The random number storage register RM (Ho to H7) stores the numerical values (random numbers) for creating the next problem even after creating one practice problem, and stores new random numbers one after another each time a practice problem is created. do. In the arithmetic function storage register FN (F4), the arithmetic symbol information specified by the question type changeover switch 3 is a (1010) code for addition, a (1011) code for subtraction, and a (1100) code for multiplication. Each division is encoded into a (1101) code and stored. The difficulty level preservation register z (F5) stores difficulty level information (levels 1 to 6) selected by the question difficulty level changeover switch 5. Flag register FF (F
6 to F6) store the control state of the LSI 21, and conditional flip-flops (hereinafter flags F61+F6)
2.F63+ F64.F71.F72). Register TE used during blinking (B14~Bl
l, , C0-CI) is used for time control to blink the display when one practice question is answered correctly or when the score is 100, and counts until the contents of the register TE reach a certain value. It will be uploaded. Remainder storage register A
M (E'. ~E2) stores remainders in division practice problems. Next, the internal state of the RAM 57 in the score display state will be explained with reference to FIG. In the same figure, the contents of the display register are different from the state shown in FIG. 7, but the other parts are the same. In other words, when the score display state is entered, the previous display register (Ao
=A*+ The data stored in BO-B7) is cleared, and the practice number information stored in the practice number storage registers (H82 to H+5) is transferred to the practice number display registers LD (AS to As). be done. Similarly, the number of points out of 100 is calculated based on the number of correct answers stored in the correct answer number storage register 5E (F, ~F + o), and the result is displayed in the score display register T O (Ao = A2 ) will be forwarded to. Also, register 5ED for displaying the number of correct answers (Bo to B2)
The contents of register SE are transferred to , and the contents of register MOD are held as they are. Next, the structure and operation of the apparatus of the present invention will be explained in detail according to actual calculation practice operations. First, prior to this explanation, the functions of the selection switch group and each key of the key input section will be explained. The calculation type changeover switch 3 is composed of a four-position slide switch, and sets the type of four arithmetic calculations. The number of questions changeover switch 4 is composed of a three-position slide switch, and selectively sets the number of questions between 10, 25, and 100. The difficulty level selector switch 5 sets problems with sliding difficulty levels in 6 positions. The 2nd key is operated when newly setting the four arithmetic calculations, difficulty level, and number of questions. If the key is pressed after each setting, each setting information will be updated to the LSI 21.
Stored internally. The EEEEI key is operated when starting a series of calculation exercises, and when the key is pressed, a problem generation mode is set, and problems are generated according to the contents of the changeover switch and the exercise number that have been set. The numerical keypad - diagram is operated when entering the practice number and answer, and in problem generation mode it becomes the answer number, and in other cases it becomes the practice number number. The Loe η key is used to set the remainder in division, and the quotient and remainder are set by manipulating the quotient and the remainder. The EE key is operated to judge whether the entered answer is correct or incorrect. The a key ends problem generation, resets the problem generation mode, and displays the score and number of correct answers. [The keys are operated when correcting the practice numbers and answer numbers, or when redoing calculations when incorrect answers are displayed. Next, the configuration and operation of this device will be explained step by step from when the power is turned on. First, this device is configured so that the number of digits in a calculation problem is displayed as a numerical symbol such as "0" when the power is turned on or after the d key is operated. In other words, when a learner studies on a training machine, it is necessary not only to select addition, subtraction, multiplication, and division, but also to select the operand and the number of digits of the operand.
6th grade), but the operand and number of digits of the operand for the problem that will occur now related to this selection are displayed as 0". For example, multiplication before or after power on, 1 grade, 2
The case where the a key is pressed after setting the time to 5 will be explained with reference to the operation explanatory diagram of FIG. First, synchronize with the power on or press the M key to solve the problem number 259 multiplication code 12. Information on difficulty level 1 is stored in registers TM, FN, and Z, respectively. Next, memory areas Do to 15 are cleared, and the function (X) stored in register FN (F4) is moved to memory area D4. Next, input "1111" into the memory area A O-%, -15 to blank the display. Next, by determining the content of F4, since the content of F4 is "12", it is multiplied,
Based on the determination result, the contents of D3-5 are moved to A3-5, and the memory areas H8-9 storing the set number of questions are moved to B8-9. Through the above operations, the display on the display unit 2 becomes as shown in FIG. 10, and the operand, the number of digits of the operand, "ox o", and the number of questions, 25, are displayed. Furthermore, Fig. 11 shows an example in which the number of digits of the operand and the operand are displayed using a symbol other than 0. Therefore it is executed,
The operations described below are similarly controlled and executed by the output of the ROM. In other words, in the device of the present invention, the ROM is programmed in firmware format according to the operational diagrams described above and later. In order to generate practice problems, calculation problems are sequentially created and displayed by operating the EE keys. Next, the operation of generating practice questions will be explained with reference to the operation explanatory diagram of FIG. 12. There are two ways to start learning calculation problems: one is to operate the 477 lower key, and the other is to operate the EE key after specifying a group of practice problems using the numerical keys. In addition, in the device of the present invention, a series of practice problems are created using random numbers generated by the multiplicative congruence method, and these problems are uniquely determined by the given initial value (a value related to the value indicating the group of practice problems). If the problem group has the same practice number, the same problem will always occur. First, by pressing the 2 key, all memory areas C6-Cl3 are cleared. Next, the contents of the flag register F6□ are judged.As will be described later (see Figure 15), F6□ is a flip-flop that is set when a numeric key is operated and the lead-in occurs, and the practice problem group number is set. If it has been input, it is in a set state, and the input information is stored in memory areas BO to 5. Now F62
Assuming that is set, then B. The contents of ~5 are moved to C6~5, and the contents of C0%6 are shifted to the right until there is no blank signal "15" in co. By this operation, the lead-in numerical value as the practice problem group number is held in the memory areas C8 to C5 with C6 as the first digit. On the other hand, if the B key is pressed without leading in a numeric value, "1" is input into C8 based on the determination F 62 =O. This means that practice number "1" has been set. Next, input "1°" into C5 and generate random numbers by the multiplicative congruential method using the contents of the memory areas C6 to C9 as initial values.
) is a method of generating random numbers by multiplying Xi by 23 and dividing by 108+1, and the remainder is set as Xi+1. Specifically, first, the contents of memory areas C6 to C9 are stored in the memory area. After transferring to ~9, C8~9+Do~, →Co~. Execute, then shift the contents of C6~ to the left by one digit, go through Co~o + I) o~9 → Co~, 3 times, then Dr, after clearing ~9, C8~, After transferring to D(+-1 and clearing C8~9, CO~7 DO=I
→ Execute C, ~7, and set CO~7 to random number storage register HO
~7, and generate a problem using this random number. In addition, when creating a new problem, the above-mentioned calculation is performed based on the numerical values stored in HO to 9, and random numbers for creating the problem are sequentially generated. For example, if the initial value is (100001), the following random numbers will be generated in sequence. (2300023). (52900529), (16712155). (84379562), (40729907)...Also, if the practice problem group number is 7, the initial value is (1000
07) as (2300161). (52903703), (16785157). Random numbers (86058608), (79347965), etc. are generated sequentially. Next, the operation of creating and displaying the random number calculation problem will be explained with reference to the explanatory diagram of FIG. 13. When displaying a calculation formula in the device of the present invention, the operand and the operand are displayed adjacent to each other around the function symbol (+, -, X, ÷), and this display format makes the calculation formula easy to see. , which also corresponds to the writing method of commonly used problem sets. As an example, the occurrence of problems and the display of calculation formulas will be described for the case where the problem group number "1" is 9 multiplication and the difficulty level is set to level 1. First, as mentioned above, the first random number (2300023) is generated, but it is not used because the fourth or fifth digit is "°0゛°. Similarly, the second random number is also not used and is a random number (16712155). ) is used to create the first calculation formula. First, the contents of the random number storage registers Ho~7 are transferred to the memory area Ho~7. Next, D4~7 are shifted to the left once and the stored functions are F4 (×
Move the contents of symbol) to B4. At this time, the contents of Do~7 are (
671×2155). Also, memory area A. A blank signal "151" is input to ~15+BO~15. Next, by determining the contents of F4 and F, it is determined that this is a multiplication class 1 problem creation operation, and memory areas D3~5 are selected and A3~ 5. Also, a code “11” that displays the “=” symbol is input to B6, and the number of questions is saved in registers C8 to 1o.
The number 1 is added to (initially 68 to 1o are cleared) and the information G8 to 9 of the number of problems currently occurring is Bs ~
Transfer to 9. Through the above operations, the calculation formula (IX2) and the number of problems "1" are displayed on the display as shown in Figure 14, and the operands and operands are displayed with the multiplication symbol "x" in the center. Ru. The correct answer to this calculation problem is calculated by the calculation control unit 50 and then stored in the register AS (Go to 6) so that the most significant digit is located at 65. After that, similar operations are executed to solve calculation problems (7X9), (2
X9)... are automatically created one after another. Next, a description will be given of the operation in the case where the user calculates the calculation problem displayed on the display section by hand, etc., and then reads in the answer using the numerical keys. In the device of the present invention, even if the answer obtained by hand calculation etc. exceeds the display allowable digit N, it is possible to perform a lead-in of N digits, and the lead-in operation of the exceeded digit is stored internally, and the next n key is used. It is configured to perform error detection during correct/incorrect processing during operation. In other words, if the answer that the user solved by hand or by rote exceeds the number of displayed digits, and the value of the displayed digit matches the correct answer, even though the user's calculation was incorrect. There may be cases where the answer is determined to be correct. For example, when calculating 823X571 with 6 digits before the answer can be entered, the correct answer is 469933, but if the user inputs 4699
If the answer is 330, which is one more digit, the displayed part will be the same as 469933, and there is a possibility that the answer will appear to be correct. On the other hand, in the apparatus of the present invention, the number setting operations for display digits or more are stored, and an error is determined at the subsequent correct/incorrect determination. Figure 15 is an explanatory diagram of the operation when inputting the answer obtained by hand calculation or by rote using the numerical keys, where N means the operation of the numerical keys, and when the first numerical key is pressed,
is determined, and the operation of storing the numerical value N in B5 and the operation of setting the flag register F6□ are executed. When setting the next number, the value N is determined by B5~15°B4=15.
is stored in B, and the same operation is repeated thereafter to store numerical values in BO to 3. Further, the numeral operation is continued, and the flag flip-flop F71 is set in the seventh numeral position because it is BO~5~15. The information is memorized and used for subsequent correctness/incorrect determination processing. Next, the functions of the four keys will be explained. The Loki in the device of the present invention has two functions: a function of comparing the correct answer value with the input answer, and a function of calling up the correct answer value. These distinctions are made using flag register F11.
The details are explained below with reference to the operational diagram of FIG. 16. First, when the mouth T key is pressed, the content of F62 is “θ”
If Fe2 was set by pressing down the numeric key before the ffi key was operated, Fe2 is reset, and then the process moves on to determining the F71 flag. As mentioned above (explanation of Figure 15), the F71 flag is a flag that is set when a numerical value of 6 or more digits is entered.If F71 is set, it is determined that the input answer was incorrect. Code 1 for displaying the error symbol "x9" is stored in A9 and flag F64+
After setting F72 and resetting F71, it moves to the display routine, and the "x1" signal in the upper most significant digit of the display lights up.Also, if flag F71 is in the reset state, the next input by the user The contents of memory area B.~5 where the answer is stored are compared with the contents of memory area Go~5 where the correct answer value is stored, and if they do not match, the process moves to the routine of the above-mentioned 1→A 9 + and F64+F72 sets. If the comparison result matches, the F72 flag is checked, and if F72 has been reset, "1" is added to the correct answer number storage registers F8 to 1o, and then the correct answer symbol "○" is added.
Code 6 for display is stored in A9, and the process moves to a correct answer blinking display routine. In addition, if F7□ is set, it is determined that the correct answer has been input after a mistake has been displayed once, and the function directly stores and blinks code 6 A without executing the operation of counting the number of correct answers "F8~..+1". Move to display routine. On the other hand, when the Eg key is pressed and the verification results in an incorrect display and Fe2 is set, when the ffi key is subsequently pressed, the correct value is memorized by determining the reset state of Fe2 and the determination of the set state of Fe2. Memory area G
The contents of O to 5 are memory area B. ~, and the correct answer value is displayed. Next, a preprocessing operation for displaying the remainder when the practice problem is division will be explained. In the device of the present invention, the quotient and remainder in division are displayed simultaneously, and the boundary between the quotient and remainder is separated by a blank or a special symbol. The integer answer to the current division problem is G, and the remainder of ~5 is E.
The preprocessing operation for displaying the quotient and remainder will be described with reference to the operation explanatory diagram of FIG. The integer answer (quotient) is stored in Go to 6 with its most significant digit located at 65 as described above. That is, the answer (An
s) is the memory area G. While shifting to the left until the numerical value reaches the most significant digit of ~5, input the blank signal 15 to the least significant digit. After determining that a numerical value has arrived at q5, memory F5
It is determined whether the selected difficulty level is level 6 or not. The difficulty level of division is grade 1 (2 digits ÷ 1 digit), grade 2 (2 digits ÷ 1 digit), grade 3 (3 digits ÷ 1 digit), and grade 4 (3 digits ÷ 2).
digits), 5th grade (4 digits ÷ 2 digits), and 6th grade (4 digits ÷ 3 digits). When calculating for 5th grade, the integer answer is a maximum of 3 digits, the remainder is a maximum of 2 digits, and 6 When calculating classes, integer answers have a maximum of 2 digits and remainders have a maximum of 3 digits. Therefore, when displaying these contents within 6 digits, the remainder should be displayed as 5 digits.
For grades, it must be displayed in the first and second digits from the bottom, and for grades 6, it must be displayed in the first to third digits from the bottom. For this reason, in the device of the present invention, the quotient and remainder can be displayed in 6 digits without increasing the number of display digits by changing the display position of the remainder in 6th grade and in other cases. The specific process is to first determine the contents of memory F5 to determine whether the difficulty level is level 6 or not, and if it is level 6, take a note! J E21 Eta
In the order of Eo, determine whether the memory contents are "0" or not.
G the contents of E2 to Eo from the point where it is not. Transfer to ~2 in order from 62, and if it is other than 6th grade, El, EO
In the order of , it is determined whether the memory contents are "θ" or not, and from the point when it is not 60", the contents are transferred to Gl in order from G. to 1,
memory g. ~5, the quotient and remainder are stored adjacently via a blank digit. Therefore, as mentioned above, if you operate the ffi key twice in succession to display the correct value, Go
The contents of ~5 are B. ~5, and the quotient and remainder are displayed on the display section. For example, in the calculation of 9876÷5 with difficulty level 3, the quotient is 197.
5. The remainder 1 is displayed in a line with blank digits in between, as shown in Figure 18. Note that a special symbol other than a numerical value may be displayed in the blank digit separating the quotient and remainder. Next, the function of the 口■I eco key will be explained. In the device of the present invention! The key has a function to correct the entered numeric value, for example, it leads in the numeric value, and even if the number is 6 digits or more and the F71 flag is set, the next time you press the U key, F71 will be reset. Returns to the original state, leads in the number digit again, and if the number digit is the correct value, press the Continue <ffi key to display the correct answer (0 symbol display) and change the contents of the correct number holding register. A function to add “1” and a function to clear the “×°゛” display that indicates the answer and error when redoing a calculation. For example, when a numerical value is lead-in and the numerical value is lead-in to 6 or more digits, F71 is set. After (x display), operate the fl key,
After clearing the answer display, the correct answer value is read in, and even if the correct answer is displayed (0 display) by operating the U key, it does not count as the number of correct answers. This operation will be explained with reference to the operation explanatory diagram of FIG. 19. Now, by leading in a numerical value, the flag F6□ is set as shown in FIG. 15, and further by leading in a numerical value of 6 or more digits, pyt is set. If you operate the ff key at this point, the set state of Fe2 will be determined and F
71 is reset and display register B. A blank signal 15 is input to 5 to 5, and Fe2 is reset. After that, lead in the numerical value, and if the value is the correct value, press the Continue <ty key to display the set state of Fe2, the reset state of F7+, B, ~5 and G. . The matching state of ~5 and the reset state of F7□ are determined, respectively, and the number of correct answers is stored in registers F8~1.
"1" is added to o. On the other hand, if you enter a numerical value of 6 digits or more, or if you operate the ffl key after entering an incorrect answer, a mistake will be displayed as described above (1 → As), F64 + F7 □ set, F 112 + F 71 reset. The state will be as follows. Next, when the d key is pressed, the reset state of Fe2 is determined.Blank signal 15 is input to answer display registers B and ~5, and Fe2 is reset, but F72 and F-114 remain set. There is even. Therefore, a numerical value is read in next, and if the value is the correct value, the set state of F72 is determined by the subsequent operation of the ffi key, and the memories F8 to F10 are not counted up and shift to the correct answer display operation of the O symbol. do. Next, a blinking display routine after operating the 口T old key will be explained. The device of the present invention is configured to notify whether or not the entered answer is correct by blinking all the digits on the display. explain. When moving to the blinking display routine, first the memory area CO”-1
5 and B14~Is are cleared, then 13 to RI5
(1101) is added in binary, and the result is the arithmetic control unit 5
The signal is stored in the accumulator AC within 0, and the occurrence of a carry is determined. Since no carry has occurred at this time, the process moves to the next step of adding "1" in binary to B14. In this case as well, since no carry occurs, the process moves to the display lighting routine and memory A is stored in the display lighting routine. ~0
．． The contents of Bo~ are dynamically displayed for one period (one period of timing signal R14 or RI[1), and 13 is added in binary to B16 again, and this operation is repeated. At the 16th time of this repeated operation, Bl
In the process of adding "1" to B16 in binary, it is determined that a carry has occurred, and 1 is added to B16 in binary. When this repetitive operation is further executed 23 times, the content of Bl5 becomes 3, a carry occurs in the process of adding "13" to Bl5 in binary, and the process changes to adding "13" in binary to accumulator AC. At this time, since the content of AC is 0'', no carry occurs when adding 13, and 1 is placed in Bl4.
” is added in binary. At this time, the contents of BI4 are “
1'' and no carry occurs. Therefore, memory C
Proceed to the step of adding "1" to o. Since carriers are not generated at this time, the display goes to the display turn-off routine, and the display is turned off for the same time as the display turn-on routine.
The process moves to the step of adding 3''. At this time, since the previous content of 815 "3" has not changed, a carry occurs again, and the process moves to adding 1 in binary to BI4 again. This operation Repeat for the 16th time, B
A carry occurs in the process of adding “1” to 14 in binary,
1 is added in binary to the contents of B15, and at this time the contents of BI6 become "4". Furthermore, if this repetitive operation is executed 32 times, a carry occurs at the time when "13" is added in binary to B15, and the accumulator AC becomes 3, so when 13" is added in binary to the accumulator AC. When a carry occurs, l'3+s is reset to 0'' and the process returns to the display lighting routine. By repeating the above display lighting routine and display lighting routine once, the memory C1 becomes 3, and this lighting By repeating the light-off cycle three times, the content of C1 becomes “9”.
''. Therefore, when C1 becomes 10 in the fourth blinking routine, a carry occurs because 6 is added to C1 in binary, and the blinking display routine ends due to the judgment of this carry, and the next number of questions is compared. Shift to the routine. Through the above operations, the display will blink three times at intervals of, for example, 0.4 seconds, informing the practitioner that the entered answer is correct. In this case, an alarm will sound. The number of questions matching routine compares the number of questions set in advance and the number of questions that have occurred up to now, and if they are different, calculates the random numbers written in memories H6-7.
9 to proceed to the next problem creation routine (Figure 12*2). If the set number of questions matches the current number of questions, the process moves to the end run (FIG. 21, 8). In addition, to determine Fe2, the correct answer will flash during practice, and the next time a new problem occurs, operate the 8 keys.
After the flashing display routine is entered when all questions are answered correctly, the questions that have already occurred are displayed and a decision is made to proceed to the display routine to continue learning. Next, the number of questions, the number of points, and the number of correct answers are displayed at both ends of the display. A routine for displaying practice numbers will be explained. In the device of the present invention, at the end of the practice problem or at the 5th
When a key is operated, the current score and number of correct answers are displayed together with the number of questions and practice numbers, and its operation will be explained with reference to the operation explanatory diagram of FIG. 21. The state of the registers when the device is currently experiencing a problem is, for example, memories A5 to As (3C4) (where C indicates code 12 indicating multiplication), B6C-). B, ~B8 (11), F8 (8), F7

[0], 69~
G, (1,1), H16~812 (123F), H9~
Let it be Hs(25). (However, F is blank code 11
11 is shown. ) In this state, if you operate the 3 keys, the problem generation ends and the number of problems, score, number of correct answers, and practice number are displayed.This process will be explained below. First, the contents of flag F72 are determined. This judgment occurs when a certain question occurs, and when you input the answer and press the box key, if the answer is correct, it will automatically flash to notify you of the correct answer, and then the next question will occur and the device will stop working. It is in the state of waiting for input, and if the answer is wrong, the problem is stopped and the next problem does not occur. Therefore 3
When you operate a key, if after an incorrect answer, the number of questions currently displayed indicates the number of questions that have already been executed, but if after a correct answer, the number of questions currently displayed is The number of questions is one more than the number of questions executed. This state is determined based on the state of F72, and if F7□ is set, the process moves directly to the next step, and if F72 is reset, the value "1" is subtracted from 68-9, and the contents of memory 68-9 are 11". becomes "10".In the next step, memories C8-11++DO-16 are cleared and a blank signal 1 is sent to memories AON+BO-9.
5 (1111) is entered. In the next step (■), the correct answer number storage register F8~. . The content of is transferred to BN', and the number of correct answers is calculated as C as a preprocessing to calculate the score.
Transferred to 2-4. In this example, the number of correct answers is 1 digit.
8", so the value is B. and stored in C2. Next, move to step ■, registers 68 to 1o for saving the number of questions.
The contents of are moved to B8-1o and also to Dθ-2 in preparation for calculating the score. In this example, the number of questions is 2 digits "10", so the numbers are B8-9 and D.
It is moved to o~1. Next, move to step ■, practice number storage register H1□
The contents of ~15 are moved to A5~8. Next, move to step ■ and calculate the score C2~4/D o~,,X
100 is executed and the result is obtained as Eo~2. In the explanation example for (g), the number of questions is 10. Since the number of correct answers is 8, EO~
The number 80 is stored in 1. Next, move to step ■EO
The contents of ~2 are transferred to Ao~2. In this explanatory example, since the score is 80 points in two digits, it is moved to the A (1-4) position, then moves to the next display routine, and the second
Exercise numbers as shown in Figure 2. The number of questions, score, and number of correct answers are displayed on both sides of the display.
3J rlOJ r80J r8J is displayed. If all the questions asked are correct and the score is 100, the routine moves to a blinking display routine based on E2=1, and the score, etc. is displayed blinking. As described above, the number of questions,
The number of points, number of correct answers, and practice number are displayed at the same time. As described above, according to the present invention, for example, when a practitioner of the four arithmetic calculations, usually a child, practices the four arithmetic calculations, he or she can enter the result of the calculation by hand using the key input section. If you are studying a series of calculation problems, you can check the intermediate results such as score, number of correct answers, etc. (even before completing all the problems up to now). Therefore, it is possible to provide an electronic calculation practice machine that can motivate learners to practice and greatly improve learning effects.

[Brief explanation of the drawing]

Fig. 1 is an external view of the device of the present invention, Fig. 2 is an electric circuit diagram of the device, Fig. 3 is a plan view showing the display section of the device, Fig. 4 is a timing signal waveform diagram, and Fig. 5 is an LSI Block configuration diagrams inside the device, FIGS. 6 to 8 are configuration diagrams of random access memory in the LSI device, and FIGS. 9, 12, and 13.
Figures 15 to 17 and 19 to 21 are explanatory diagrams of the operation of the device, and Figures 10, 11, 14, 18, and 22 are displays of the display section, respectively. It is a figure showing a state. 1...Main body, 2...Display section, key input section 6, 21
... integrated circuit device (LSI), 50 ... arithmetic control section. Agent Patent attorney Aihiko Fukushi (2 others) θη 707- -709- Kuno (J CI LI LL
) Work (J 0 LJ Lt-■Work

Claims (1)

[Claims] 1. In an electronic calculation training machine for practicing four arithmetic calculations, (a) means for automatically generating multi-digit problems having at least two arithmetic numbers; (b) A first display means for displaying the above problem (
c) Input means for inputting the calculated answer (d)
A second display means (e) for displaying information other than the above questions, including at least the calculated answer; (f) a determining means for determining whether the calculated answer is correct; and (f) the above information displayed on the second display means. An electronic calculation training machine characterized by comprising: (g) a correction means for correcting an answer; and a means for disabling the correction means when the judgment means is activated. 2. Information other than questions includes number of questions, number of scores, and number of correct answers.