JPH0441397Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a small electronic calculator with a statistical calculation function, which has the function of processing statistical data of one or more variables.

[Prior Art and its Problems] Recently, small electronic calculators, such as calculators, are becoming increasingly superior in performance, and some are even capable of performing statistical calculations on more than one variable.

However, when processing statistical data of more than one variable, such a calculator can handle one variable, two variables,
It is necessary to set a mode according to variables such as..., and therefore, a troublesome operation for setting the mode is required. Also, since the display only displays the numeric data for input,
If you are inputting two variables, if you input x data and then enter the next y data after a while,
Understanding the current input data may become inaccurate, leading to incorrect input. Furthermore, when there are many variables, it becomes unclear what the next input data will be, which makes it difficult to perform accurate statistical calculations. It has a drawback that makes it difficult.

[Purpose of the invention] This invention was made in view of the above circumstances.
The purpose of the present invention is to provide a compact electronic calculator with a statistical calculation function that can eliminate the troublesome effort of mode setting, clearly grasp the state of input data, and enable accurate statistical calculations. shall be.

[Key points of the invention] The compact electronic calculator with a statistical calculation function according to the invention executes statistical calculations using input statistical data, and the first statistical data is inputted from the data input means. The number of input variables is determined when the input variables are input, the one-variable or two-transform statistical calculation mode is set based on this, and this calculation mode is displayed. It is designed to display whether the data is X or Y.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings.

FIG. 1 shows the circuit configuration of the same embodiment. This example uses univariate standard deviation calculation mode (SD) and bivariate regression calculation mode (LR).
This section describes devices that have data processing functions related to the above.

In the figure, 1 is a key input section, and this key input section 1 includes a numeric keypad 1a, a function key 1b,
"DATA" key 1c for data input, "DATA AC" key 1d, x, for clearing all data
"x _D , y _D " key 1e for y-separated commas, and mode specification keys: n (number of sample data) key 1f, (average value of x) key 1g, (average value of y) key 1h, Σx (x sum) key 1i, Σy(y
(summation of) keys 1j, etc. Then, such a key input signal from the key input section 1 is given to the key judgment section 2, where the key is judged and then given to the control section 3.

The control section 3 is composed of a ROM or the like, and stores various control programs for controlling each circuit in response to key inputs from the key input section 1.
Further, the control section 3 provides the key input data from the key input section 1 to the SD/LR judgment section 4 and the storage section 5, and also provides an address control command to the address control section 6 of the storage section 5, and further provides the calculation section 7 with the key input data from the key input section 1. Give control commands.

Here, the SD, LR judgment unit 4 sets SD41, LR42, x as flags consisting of 4-bit registers.
43, y44, and after the first data input in the key input section 1, when there is key input data from the "x _D , y _D " key 1e, the flag x43 and the flag
LR42 is set, and then when there is key input data from the "DATA" key 1c, a flag y44 is set. If there is key input data, flag x43 and flag
It is designed to stand up the SD41. In addition to the x data register 51 and the y data register 52, the storage unit 5 includes an n (sample data number) register 53,
(average value of x) register 54, (average value of y)
register 55, Σx (sum of x) register 56,
It has a Σy (total sum of y) register 57 and the like. Further, the arithmetic unit 7 performs data processing necessary for statistical calculation by exchanging data with the storage unit 5, and provides the results to each register 53 to 57 of the storage unit.

The SD, LR judgment section 4 provides judgment outputs to the display control section 8 and also to the address control section 6. Furthermore, the storage section 5 provides the display control section 8 with the contents read out according to the control command from the address control section 6 .

Then, the display on the display section 9 is controlled by the display control section 8. In this case, the display section 9 has a main display section 91 and a sub display section 92, as shown in FIG. Here, the main display section 91 and the sub display section 9
2 consists of display elements of 8 digits each. Also,
Display section 9 shows SD93 and LR9 as mode symbols.
4, x95, y96, and those whose flags are set in the SD/LR determining section 4 are turned on.

Next, the operation of the embodiment configured as described above will be explained.

First, to describe the regression calculation mode with two variable inputs, as shown in the flowchart of Figure 3,
In step A1, when data is input as the first variable from the numeric keypad 1a of the key input section 1,
Proceed to step A2. In this case, if the input data "12" is input from the numeric keypad 1a as shown in FIG. Then proceed to step A3.

In this step A3, it is determined whether or not there is key input data from the "x _D , y _D " key 1e. If the answer is NO, the process advances to step A4, where it is determined whether there is any key input data from the "DATA" key 1c. If the answer is NO, the process returns to step A3, and the "x _D , y _D " key 1e
This state is maintained until either the "DATA" key 1c or the "DATA" key 1c is operated.

From this state, take the steps as shown in Figure 4b.
At step A3, when key input data is given from the "x _D , y _D " key 1e, the process proceeds to step A5, and the SD, LR determining section 4 flags whether or not the mode symbol SD93 on the display section 9 is lit. This is determined by the presence or absence of SD41. At this point, the symbol
Since SD93 is not lit, the process proceeds to step A6, but if the symbol SD93 is lit, the process proceeds to step A7, where the error is processed, waits for the error to be cleared at step A8, and then returns to step A2. .

In step A6, it is determined whether the symbol x95 is lit or not based on the presence or absence of the flag X43. At this point, symbol x95 is not lit, so the process advances to step A9. Here, if symbol x95 is lit,
Proceeding to step A10, it is also determined whether symbol y96 is lit, and here symbol y96 is lit.
If it is not lit, the error will be processed in step A7, the process will wait for the error to be cleared in step A8, and then return to step A2.

In step A9, the above-mentioned data "12" inputted from the numeric keypad 1a is sent to the address control section 6.
is written into the x data register 51 of the storage section 5 according to the command. Then, in step A11, the display position of the input data "12" is shifted from the main display section 91 of the display section 9 to the sub display section 92.

Next, the process proceeds to step A12, where the flag X43 is set and the symbol x95 on the display section 9 is lit. In this case, symbol y96 is turned off, but since symbol y96 is not lit here, it remains in its previous state. Then proceed to step A13.

In step A13, it is determined whether the input data at this point is the first data. in this case,
Since the input data is the first data, the process advances to step A14, and the symbol LR94 on the display section 9 is lit.
Then, in step A15, it is determined whether or not the next data is to be input.

From this state, if the input data "34" is input as the second variable from the numeric keypad 1a as shown in FIG. 9 is displayed on the main display section 91. And the steps
At step A3 and step A4, the process waits for input of either the "x _D , y _D " key 1e or the "DATA" key 1c.

From this state, as shown in FIG. 4d, in step A4, when key input data from the "DATA" key 1c is given, the process advances to step A16, and it is checked whether the symbol LR94 is lit on the display section 9. This is determined based on the presence or absence of the flag LR42 of the SD/LR determining section 4. In this case, the symbol LR
Since 94 is lit, proceed to step A17.
Here, it is also determined whether the symbol y96 is lit. At this point, symbol y96 is not lit, so the process advances to step A18. Here, if the symbol y96 is lit, the error will be processed in step A7, and the process will return to step A2 after waiting for the error to be cleared in step A8. In step A18, the above-mentioned data "34" inputted from the numeric keypad 1a is stored in the y data register 52 of the storage section 5 by a command from the address control section 6.
written to. Then, in step A19,
The flag Y44 is set and the symbol y is displayed on the display section 9.
96 lights up.

In this state, proceed to step A20. In this step A20, based on the contents of the x data register 51 and the y data register 52, data processing for regression calculation of two variables is performed based on n (number of sample data), (average value of x), (average value of y). ), Σx
(summation of x) key, Σy (summation of y), etc. are executed in the calculation section 7, and the results of these calculations are written into the corresponding registers 53-57. Then, the process returns to step A15, and it is determined whether or not the next data is to be input.

From this state, if the input data "56.8" is input again as the first variable from the numeric keypad 1a as shown in FIG. It is displayed on the main display section 91 of section 9. Then proceed to step A3.

In this case, as shown in FIG.
When key input data from the "x _D , y _D " key 1e is given at A3, a symbol is entered at step A5.
It is confirmed that SD93 is not lit, and it is confirmed in step A6 and step A10 that symbol x95 and symbol y96 are lit. Furthermore, the input data is entered into the x data register 51 in step A9, the display position of the input data "56.8" is moved to the sub display part 92 of the display part 9 in step A11, and the symbol x95 is entered in step A12.
The symbol y96 is turned off while remaining lit. In this case, since the input data is not the first data, the process proceeds directly from step A13 to step A15. after that,
As shown in Figure 4g, when the input data ``90.12'' is input as the second variable, and the key input data of the ``DATA'' key 1c is subsequently input, the illumination of symbol LR94 is confirmed in step A16. In step A17, it is confirmed that the symbol y96 is not lit. Then, in step A18, the input data is input to the y data register 52, in step A19, the symbol y96 is lit, and in step A20, data processing for two-variable regression calculation is performed.

Thereafter, data processing for two-variable regression calculation is similarly performed based on the input data, but if it is determined in step A15 that there is no next data input, processing in the regression calculation mode is ended.

Next, the standard deviation calculation mode for one variable will be described.

In this case as well, if data is input as the first variable from the numeric keypad 1a of the key input section 1 at step A1 of the flowchart in FIG.
Proceed to A2. This input data is displayed on the main display section 91 of the display section 9 by the display control section 8. Then, the process proceeds to step A3, where it is determined whether or not there is key input data from the "x _D , y _D " key 1e. If the answer is NO, the process advances to step A4, where it is determined whether there is any key input data from the "DATA" key 1c. Here, if there is no key input data from the "DATA" key 1c, the process returns to step A3. Therefore, this state is maintained until any key is operated.

From this state, when key input data of the "DATA" key 1c is given at step A4, the process advances to step A16. Then, in step A16, the mode symbol LR on the display section 9 is
It is determined whether or not 94 is lit. At this point, the symbol LR94 is not lit, so the process advances to step A21. In this step A21, the data inputted from the numeric keypad 1a is transferred to
Written to data register 51. Then, in step A22, the input data at this point is
It is determined whether the data is data or not. Since the input data in this case is the first data, the process advances to step A23, and the symbol SD93 on the display section 9 is lit.

In this state, proceed to step A24. In this step A24, based on the contents of the x data register 51, data processing for calculating the standard deviation of one variable is performed such that n (number of sample data), (average value of x),
(average value of y), Σx (total sum of x) key, Σy (total sum of y), etc., are executed by the calculation section 7, and the results of these calculations are written into the corresponding registers 53-57. Then, the process advances to step A15, where it is determined whether or not the next data input is required.

Here, when the "x _D , y _D " key 1e is operated after data input, YES is determined in step A3 and the process proceeds to step A5. In step A5, the symbol SD
It is determined whether or not 93 is lit, and since the standard deviation is being calculated, it is determined as YES, and error processing is performed in step A7. After that, if you clear the error in step A8, you will return to step A2 and continue with step A8.
Processing is continued by operating the "DATA" key 1c on A4.

Thereafter, data processing for calculating the standard deviation of one variable is performed in the same way based on the input data, but in this case, all data other than the first input data are processed in steps.
At A22, it is determined that the data is not the first data, so the process proceeds directly from step A22 to step A24. Furthermore, if it is determined in step A15 that there is no next data input, processing in the standard deviation calculation mode is ended.

Therefore, if you do this, "input data", "x _D , y _D ", "input data" and "DATA"
Entering in this order sets the two-variable regression calculation mode, and entering "input data" and "DATA" in that order sets the single-variable standard deviation calculation mode. Since the mode can be automatically set based on the number, it is possible to eliminate the troublesome trouble of setting the mode, which has been problematic in the past, and it is also possible to prevent erroneous calculations due to errors in mode setting. In addition, each setting mode is clearly indicated by a symbol on the display, and input data x and y are also clearly indicated by symbols on the display, so the current status of the input data can be accurately grasped. This prevents erroneous data input and allows accurate statistical calculations to be performed at all times.

Note that this invention is not limited to the above-mentioned embodiments, and can be implemented with appropriate modifications within the scope of the invention.

[Effects of the invention] According to this invention, it is possible to eliminate the troublesome effort of setting the mode, and moreover, the state of input data can be clearly grasped, so that accurate statistical calculations can be performed at all times.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the circuit configuration of an embodiment of this invention, Figure 2 is a schematic diagram showing the display section used in the embodiment, and Figure 3 is a diagram for explaining the operation of the embodiment. The flowchart in FIG. 4 is a diagram for explaining the relationship between key input and display on the display unit in the same embodiment. 1...Key input section, 1a...Numeric keypad, 1c...
..."DATA" key, 1e..."x _D , y _D " key,
3...Control unit, 4...Mode determination unit, 5...Storage unit, 6...Address control unit, 7...Calculation unit, 9...
...Display section, 91...Main display section, 92...Sub display section, 93...Symbol SD, 94...Symbol
LR, 95...symbol x, 96...symbol y.

Claims (1)

[Scope of Claim for Utility Model Registration] A small electronic calculator with a statistical calculation function that performs statistical calculations using input statistical data, comprising: a data input means for inputting statistical data; mode control means for determining whether the number of input data is 1 or 2 when statistical data is input, and setting a 1-variable or 2-variable statistical calculation mode based on the determination result; a mode display means for displaying the calculation mode set by the control means; and when the two-variable statistical calculation mode is set by the mode control means, it determines the order of the data input from the input means and determines whether the input data is variable X; , Y. A small electronic calculator with a statistical calculation function.