JPH0380397A - Product sales data processing device - Google Patents

Abstract

PURPOSE:To easily perform a corrective operation by subtracting a taxable amount included in amount data in a preceding registration memory from a sale tabulation memory, and adding an amount in which the taxable amount is subtracted from the amount data in a taxable amount memory when an untaxable/inner multiplication correction key is depressed. CONSTITUTION:When such operation that an inner multiplication registration operation is performed for goods registered previously for which untaxable registration should be performed, or that the untaxable operation is performed for the goods for which the inner multiplication registration should be performed is performed in the middle way of performing the registration of the goods, the untaxable/inner multiplication correction key 38 is depressed. Then, it is judged whether the untaxable registration or the inner multiplication registration is performed for the goods registered previously from the state of a tax multiplication designation flag memory 48. When the untaxable registration is applied, the taxable amount included in the amount data in the preceding registration memory 43 is subtracted from the sale tabulation memory 44, and also, the amount in which the taxable amount is subtracted from the amount data is added on the taxable amount memory 45. In such a way, the corrective operation can be easily and quickly performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a product sales data processing device such as an electronic cash register or a POS (Point of Sales) terminal. For more details, please refer to the product tax amount incorrectly.
The present invention relates to a product sales data processing device having a function of correcting internal registration or external registration where tax exemption registration should be made, or vice versa.

[Conventional technology] In today's consumption tax system, some products are exempt from taxation, while others are exempt from taxation.
It is very complicated because there are taxable items, and taxable items include internal and external taxable items.

Therefore, with the introduction of consumption tax, product sales data processing devices such as electronic cash registers and PO8 terminals equipped with a consumption tax calculation function have been developed.

Conventional product sales data processing devices equipped with a consumption tax calculation function find that depending on the product, the product is exempt from tax, or the consumption tax is included in the tax (tax included).
This differs depending on whether the tax is tax-exclusive (if the consumption tax is included in the product price) or the tax is excluded (if the consumption tax is not included in the product price), so please check the tax separately before registering each product. After specifying whether the product is tax exempt, internally registered, or externally registered, the product is registered.

Then, in the case of tax-exempt registration, the input amount is directly added to the departmental total memory and one customer's sales total memory. In addition, in the case of internal charge registration, the amount obtained by subtracting the consumption charge from the input amount is added to the departmental total memory, the sales total memory for one customer, and the taxable amount memory, respectively. Furthermore, in the case of external registration, the input amount is added as is to the departmental total memory, the sales total memory for one customer, and the taxable amount memory, respectively.

Finally, when the total key is pressed, the taxable amount in the taxable amount memory for one customer is multiplied by the consumption tax rate to calculate the total tax amount, and the total amount of this total tax amount and the amount in the sales total memory, In other words, the total payment amount is calculated.

However, if you forget to specify whether the product is tax exempt, internally registered, or externally registered before registering the product, or
If you mistakenly register as an internal or external registration when it should have been a tax-exempt registration, or conversely, register as an external or internal registration but as a tax-exempt registration, you may be unable to cancel or return the product. After doing so, it is necessary to correctly register for tax exemption, internal payment, or external payment again.

[Problem to be solved by the invention] As in the past, when a tax-exempt registration is registered as an internal registration or an external registration, or conversely, when an external registration or an internal registration is registered as a tax-exempt registration, there is no need for repeated cancellation operations (or , return operation), and then re-register correctly for tax exemption.
Complicated key operations are required to perform in-call registration or out-call registration.

For example, to perform a return operation, it is first necessary to switch the control key to return mode, enter the amount using the numeric key, and then press the department key to perform the return process. After that, you have to specify whether you want to register as tax-exempt, in-house or out-of-pocket, enter the amount using the numeric keys again, and then press the department key. Therefore, if the accuracy is incorrect, it takes time to correct the error, which significantly reduces the efficiency of accounting operations.

Here, the purpose of the present invention is to solve such conventional problems, and to solve the problem in a simple manner even when a tax-exempt registration is mistaken for an internal registration or an external registration, and even when an internal registration or an external registration is mistaken for a tax-exempt registration. An object of the present invention is to provide a product sales data processing device that can be easily and quickly corrected.

[Means for Solving the Problem] Therefore, the invention described in claim 1 includes a keyboard having a tax exemption/in-payment correction key, and a keyboard that stores whether the product data input immediately before is tax-exempt registration or in-payment registration. a storage means having a tax designation flag memory, a sales total memory for storing the total sales amount for one customer, a taxable amount memory for storing the taxable amount for one customer, and a pre-registration memory for storing the amount data of the product data; and a control means, when the product data is input, the control means stores the amount data of the product data in the pre-registration memory, and
It is determined whether the product data is tax-exempt registration or in-payment registration, and if it is tax-exempt registration, the amount data is added to the sales total memory, while if it is in-payment registration, the tax amount is removed from the amount data. Means for adding the amount to the sales total memory and the taxable amount memory respectively, and when the vI tax exemption/inclusive correction key is pressed, the data registered immediately before is registered as tax exempt from the state of the tax designation flag memory. If the registration is tax-exempt, the tax included in the amount data in the previous registration memory is subtracted from the sales total memory, and the amount obtained by removing the tax from the amount data is determined to be taxable. In addition, in the case of internal charge registration, the tax included in the amount data in the previous registration memory is added to the sales total memory, and the amount obtained by removing the tax from the amount data is calculated as the taxable amount. and means for subtracting from the memory.

In addition, in the invention described in claim 2, there is provided a keyboard having a tax exemption/external charge correction key, a tax specification flag memory for storing whether the product data input immediately before is tax exempt registration or external charge registration, and a total sales amount for one customer. A storage means having a sales total memory for storing an amount, a taxable amount memory for storing a taxable amount for one customer, and a pre-registration memory for storing amount data of product data, and a control means, the control means comprising: When product data is input, the amount data of the product data is stored in the previous registration memory, and it is determined whether the product data is tax-exempt registration or external registration, and if the product data is tax-exempt registration, the amount data is stored in the sales Means for adding the amount data to the total memory, and adding the amount data to the sales total memory and taxable amount memory in the case of external charge registration, respectively, and when the tax exemption/external charge correction key is pressed, the tax charge designation flag It is determined from the state of the memory whether the data registered immediately before is tax-exempt registration or external registration, and in the case of tax-exempt registration, the amount data in the previous registration memory is added to the taxable amount memory, while in the case of external registration, the amount data is added to the taxable amount memory. The method is characterized in that it includes means for subtracting the amount data in the pre-registration memory from the taxable amount memory.

[Function] In the invention described in claim 1, when product data including amount data and data for specifying tax exemption or tax included is input, the amount data of the product data is stored in the pre-registration memory. At the same time, it is determined whether the product data is tax-exempt or tax-inclusive, depending on whether the product data is tax-exempt or tax-inclusive.

Here, in the case of tax exempt registration, the amount data is added to the sales total memory. On the other hand, in the case of internal charge registration, the amount obtained by removing the tax from the amount data is added to the sales total memory and the taxable amount memory, respectively.

In this way, while registering products one after another, if a previously registered product is registered as tax-exempt when it should have been registered, or if it is registered as tax-exempt when it should have been registered in 1i), Press the tax exemption/internal charge correction key.

Then, it is determined from the state of the tax designation flag memory whether the previously registered product is tax-exempt or tax-exempt. In the case of tax-exempt registration, the tax included in the amount data in the previous registration memory is subtracted from the sales total memory, and the amount obtained by removing the tax from the amount data is added to the taxable amount memory. In other words, it will be the same as registering for an introductory call. Also,
In the case of internal charge registration, the tax included in the amount data in the previous registration memory is added to the sales total memory, and the amount obtained by removing the tax from the amount data is subtracted from the taxable amount memory. In other words, it is the same as registering for tax exemption. This will correct it.

Therefore, as a correction operation, it is only necessary to press the tax exemption/in-payment correction key, so that the correction operation can be performed extremely easily and quickly.

Further, in the invention described in claim 2, when product data including price data and data for specifying tax exemption or tax exemption is input, the price data of the product data is stored in the pre-registration memory, and Depending on whether the product data is tax exempt or tax exempt, it is determined whether the product data is tax exempt or externally registered.

Here, in the case of tax exempt registration, the amount data is added to the sales total memory. On the other hand, in the case of external registration, the amount data is added to the sales total memory and the taxable amount memory, respectively.

In this way, while registering products one by one, if a previously registered product is registered as an external registration when it should have been registered as an external registration, or is registered as an external registration when it should be an external registration, it becomes Press the correction key.

Then, it is determined whether the previously registered product is tax-exempt or non-taxable from the state of the tax designation flag memory. In the case of tax-exempt registration, the amount data in the previous registration memory is added to the taxable amount memory. In other words, it will be the same as registering as an outsider. In addition, in the case of external registration, the amount data in the previous registration memory is subtracted from the taxable amount memory. In other words, it is the same as registering for tax exemption. This will correct it.

Therefore, as a correction operation, it is only necessary to press the tax exemption/extra charge correction key, so that the correction operation can be performed extremely easily and quickly.

[Example] Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a block diagram of this embodiment.

In the figure, 11 is a CPU. cpuit has
A ROM 13, a RAM 14 as a storage means, and a keyboard control circuit 15 are connected via an address/data bus 12.
, a display control circuit 16, a drawer control circuit 17, and a printer control circuit 18 are connected thereto.

The keyboard control circuit 15 has a keyboard 19, the display control circuit 16 has a display 20, and the drawer control circuit 17 has a drawer 21 or a printer control port l? ! A printer 22 is connected to each is.

On the keyboard 19, as shown in FIG.
Control keys 31 are provided to instruct the CPU 1l to execute various tasks such as "inspection" and "settlement", as well as numeric keys 32 from "O", "00J" to "9", and "DPl" to "DPl" to "9". Department key 33 up to DP5J,
Subtotal key 34, Current total -Ir-35, Tax exemption key 36 for specifying that the product to be registered is tax exempt, Inner key 37 for specifying whether the product to be registered is tax inclusive or tax exclusive.
Tax-free/inside correction key 38, tax-free/outside correction -1r-
In addition to 39, other necessary keys are arranged.

Here, "registration" refers to the task of storing the amount of sold products in the RAM 14, calculating the total amount, etc., and printing out the results on receipts and journals.

In addition, "inspection" means that the RAM is
This refers to the work of printing out the cumulatively stored sales total amount, sales points, etc. Furthermore, “settlement” means
For example, at the end of the day's work, the total sales amount, sales points, etc. cumulatively stored in the RAM 14 through the "registration" task are printed out, and the RAM 14
This refers to the task of clearing the contents of

Further, as shown in FIG. 2, the RAM 14 also stores a number memory 41 that stores the number data entered using the number keys 32, and stores the number of sales points and sales amount corresponding to the department key 32. A pre-registration memory 43.1 stores the department data and number data (in this case, amount data) of the number memory 41 when the department key 33 is pressed. In addition to the main item IZA 44 as a sales total memory that stores the total sales amount for customers, the tax item IZA 45 that serves as a taxable amount memory that stores the taxable amount for customers, the tax total memory 46, and the current total memory 47. , a tax exemption flag 48 as a tax designation flag memory, a tax exemption flag 49, a registration flag 50, etc. are provided, respectively.

Here, the tax exemption flag 48 indicates the tax exemption key 36.
This is to indicate whether the data to be registered is tax-exempt registration or not depending on whether or not the operation is performed. Here, it is set when the tax exemption key 36 is pressed to indicate that the registration is tax exempt. The four internal flags are used to indicate whether the data to be registered is internal registration or external registration 5 depending on whether or not the internal key 37 is operated. Here, it is set when the inward call key 37 is pressed to instruct that it is inward call registration.

Further, the CPU 11 executes processing according to a program stored in the ROM 13. For example, when the tax exemption key 36 is pressed, the process shown in the flowchart shown in FIG. 4 is performed, and when the inner key 37 is pressed, the process shown in the flowchart shown in FIG.
When is pressed, the digit data is stored in the digit memory 41.

When the department key 33 is pressed, the process shown in the flowchart shown in FIG. 6 is executed.
When 8 is pressed, the process shown in the flowchart shown in FIG.
The process shown in the flowchart shown in FIG. 8 is performed.Furthermore, when the current total -'r-35 is pressed, the process shown in the flowchart shown in FIG. 9 is performed.

Here, the control means is mainly composed of the CPU II and the ROM 13. At least, when all product data is input, that is, when the department key 33 is pressed, the control means causes the number data stored in the number memory 41 to be stored in the pre-registration memory 43, and also sets the tax exemption flag. 48 and the state of the internal flag 49, it is determined whether the registration is tax-exempt registration, internal tJl) registration, or external registration.
4, and in the case of internal registration, add the amount obtained by removing the tax from the above-mentioned number data to the main item isa 44 and tax item isa 45, respectively, and in the case of external registration, add the above-mentioned number data to Main item Isa 44
and a means for adding each to the tax item iser 45, and when the tax exemption/insurance correction key 38 is pressed, the data registered immediately before is determined to be tax exempt registration or insurance registration based on the state of the tax exemption flag 48 and the insurcharge flag 49. In the case of tax-exempt registration, the tax amount included in the number data stored in the pre-registration memory 43 is subtracted from the main item iser 44, and the amount obtained by subtracting the tax amount from the number data is set as the tax item eyer. 45. On the other hand, in the case of internal charge registration, the amount of tax included in the number data in the pre-registration memory 43 is added to the main item isa 44, and the amount obtained by subtracting the tax amount from the number data is added. Means for subtracting from the tax itemizer 45, and when the tax exemption/external charge correction key 39 is pressed, the tax exemption flag 48 and the internal charge flag 49
It is determined from the state whether the data registered immediately before is tax-exempt registration or external registration, and in the case of tax-exempt registration, the number data stored in the previous registration memory is added to the tax item sizer 45, while in the case of external registration, and means for subtracting the number data stored in the pre-registration memory from the tax itemizer 45.

Next, the operation of this embodiment will be explained with reference to the flowcharts of FIGS. 4 to 9.

When registering a product, set the control switch 31 to "
In the state where the product is switched to "Registration", first, if the product to be registered next is tax exempt, press the tax exemption key 36,
In addition, if the tax is included, the inner call key 3
After pressing 7 (please do not press anything when excluding tax)
, enter the amount of the product using the number keys 32, and then,
The department key 33 corresponding to the department to which the product belongs is pressed.

On the other hand, when the tax exemption key 36 is pressed, the CPU II selects the tax exemption flag 48 according to the flowchart shown in FIG.
Set. Further, when inner fl)-'r-37 is pressed, the inner flag 49 is set according to the flowchart shown in FIG.

Subsequently, when the digit number -'r-32 is pressed, the digit data, that is, the amount data, is stored in the digit memory 41.

Finally, when the department key 33 is pressed, the process proceeds according to the flowchart shown in FIG. That is, in step (hereinafter abbreviated as S'F) 1, it is determined whether the control switch 31 is in the "registration" mode. If it is not in "registration" mode, it will be treated as an error. If it is in the "registration" mode, the process advances to Sr2 and it is determined whether there is number data in the number memory 41. If there is no numeric data, it will be treated as an error.

On the other hand, if there is number data, and if the amount data of the product has been input into the number memory 41, the process advances to Sr1 and it is determined whether the tax exemption flag 36 is set. If the tax exemption flag 48 is set, that is, in the case of tax exemption registration, the process goes to Sr4, where the number data (amount data) is added to the main item sizer 44, and then the process goes to Sr1, where it is stored in the corresponding departmental total memory 42. Add the numerical data and increment the score.

Next, proceed to Sr6, operate the printer 22, and print one sheet of paper.
After feeding the line, the tax exemption mark, department, and amount (W number data) are printed. Next, the process advances to Sr1 to transfer the contents, department, and amount of the non-taxable flag 48 and internal charge flag 49 to the pre-registration memory 43, and sets the registering flag 50.
and clears the internal call flag 49.

In addition, in the judgment of Sr1, if the tax exemption flag 48 is not set, that is, in the case of tax registration, Sr1
The process advances to 1 and it is determined whether the internal call flag 49 is set. If the inward charge flag 49 is set, that is, in the case of inward charge registration, proceed to 5TIO to obtain the amount obtained by subtracting the tax from the number data, that is, the actual amount A of the product0.For example, set the tax rate to 3%. and sult, rIt number 9-3N=100/
103 to find the actual amount A of the product, and this A is added to the main item isa 44 and the tax item isa 45, respectively.

Next, proceed to 5TII, add the amount A to the corresponding departmental total memory 42, and increment the score.
Next, the process advances to 5T12, where the printer 22 is operated to feed the paper for one line, and then the inner hanging mark, department, and amount (number data) are printed. After this, proceed to Sr1.

In addition, in the judgment of ST 9, if the internal call flag 49 is not set, that is, in the case of external call registration, 5
Proceeding to T13, the set number data is added to the main item iser 44 and the tax item iser 45, respectively.

Next, the process goes to 5T14, and the number data is added to the corresponding department total memory 42, and the score is incremented.Then, the process goes to 5T15, and after operating the printer 22 and feeding the paper for one line, the department and the amount (number data) to be printed. After this, proceed to Sr1.

In this way, while registering a product, if the product that was registered just before is registered as a tax-free registration when it should be registered as a tax-exempt registration, or conversely, when it is registered as a tax-free registration when it should be a tax-exempt registration. , press the tax exemption/internal charge correction key 38.

Then, the CPU II proceeds with the process according to the flowchart shown in FIG. First, at 5T21, it is determined whether the control switch 31 is in the "registration" mode. If it is not in "registration" mode, it will be treated as an error.

If it is in the "registration" mode, the process advances to S'r22 and it is determined whether the registration flag 50 is set. If the registration flag 50 is not set, it is treated as an error. If the registration flag 50 is set, the process advances to 5T23 and it is determined whether the tax exemption flag 48, which has been transferred to the previous registration memory 43, is set.

Here, in the judgment at 5T23, if the tax exemption flag 48 is set, that is, if the previously registered product is processed as tax exempt registration, the process advances to ST24 and the printer 22 is operated to print the correction mark. ,for example"·
After printing "..." and deleting the previously printed data, and then feeding the paper one line, the inner mark and the department and amount data in the previous registration memory 43 are Print it.

Next, proceed to ST 25, and calculate the amount B by multiplying the amount data in the previous registration memory 43 by 3/103, that is, the tax included in the set number data, and send the amount B to the main item sizer 44 and the corresponding department. Subtract from total memory 42. Also, the amount data in the previous registration memory 43 is 100/1.
The amount A is calculated by multiplying by 03, and the amount A is added to the tax item Isa 45. As a result, the tax-exempt registration will be corrected to a tax-exempt registration.

In addition, in the judgment at 5T23, if the tax exemption flag 48 is not set, the process advances to 5T26 and the internal charge flag 49 is set.
is set.

If the four internal call flags are not set, it is treated as an error. If the inbound flag 48 is set, that is, if the previously registered product is processed as inbound registration, the process advances to 5T27 and the printer 22 is operated to print a correction mark, for example, "..." . . .'' is printed, the previously printed data is deleted, and the paper is further fed for one line, and then the tax exemption mark and the department and amount data in the pre-registration memory 43 are printed.

Next, proceed to 5T28, calculate the amount of money [B] by multiplying the amount data in the previous registration memory 43 by 3/103, and add the amount B to the main item isa 44 and the corresponding departmental total memory 4.
Add to 2. Further, the amount A is obtained by multiplying the amount data in the pre-registration memory 43 by 100/103, and the amount A is subtracted from the tax item sizer 45. As a result, the in-payment registration is corrected to a tax-exempt registration.

On the other hand, in the process of registering a product, if the product that was registered just before is registered as a tax-free registration when it should have been registered as a tax-free registration, or conversely, if it is registered as a tax-free registration when it should have been a tax-exempt registration, it will be tax-free/tax-free. Press the three outside correction keys.

Then, the CPU II proceeds with the process according to the flowchart shown in FIG. First, at 5T31, it is determined whether the control switch 31 is in the "registration" mode. “If it is not registered J mode, it will be treated as an error.

If it is the "registration" mode, the process advances to 5T32 and it is determined whether the registration flag 50 is set. Registration flag 5
If 0 is not set to 1~, it is treated as an error.

If the registration flag 50 is set, the process advances to 5T33 and the tax exemption flag 4 transferred to the previous registration memory 43 is set.
8 is set.

Here, in the judgment at 5T33, if the tax exemption flag 48 is set, that is, if the previously registered product is processed as tax exempt registration, the process advances to 5T34, and the printer 22 is operated to print a correction mark, e.g. “...
. . . After printing J and deleting the previously printed data, and feeding the paper one line further, the department and amount data in the previous registration memory 43 are printed. Next, the process advances to 5T35 and the amount data in the previous registration memory 43 is added to the tax item sizer 45. As a result, the tax-exempt registration will be corrected to a non-taxable registration.

In addition, in the judgment at 5T33, if the tax exemption flag 48 is not set, the process advances to 5T36 and the internal charge flag 49 is set.
is set.

If the four internal call flags are set, it is treated as an error. If the internal flag 48 is not set, that is, if the previously registered product is processed as an external registration, the process advances to Sr17 and the printer 22 is operated to print a correction mark, for example, "..." . . .'' is printed, the previously printed data is deleted, and the paper is further fed for one line, and then the tax exemption mark and the department and amount data in the pre-registration memory 43 are printed. Next, 5T38
Then, the amount data in the previous registration memory 43 is subtracted from the tax item sizer 45. As a result, the external registration will be corrected to a tax-exempt registration.

After all the products have been registered in this way, the current total key 35 is finally pressed.

Then, the CPU II proceeds with the process according to the flowchart shown in FIG. First, at 5T41, it is determined whether the control switch 31 is in the "registration" mode. If it is not the "registration" mode, other processing is performed; if it is the "registration" mode, the process advances to Sr42 and it is determined whether the registration flag 50 is set. If the registration flag 50 is not set, it is treated as an error.

If the 7 lag 50 during registration is set, the process advances to 5T43, operates the printer 22, feeds the paper one line, prints out the contents of the main item iser 44, that is, the total amount of sales, and then proceeds to ST 44, the printer 22 is operated to feed one line of paper, and then the total tax amount is printed by multiplying the data in the tax itemizer 45 by the tax rate of 0.03.

Next, proceed to 5T45, operate the printer 22 to feed one line of paper, display and print the amount E, which is the sum of the contents of the main item iser 44 and the total tax amount, then proceed to 5T46. After operating the printer 22 and feeding the paper for 10 lines, stamp 1 on the paper.
Press to cut the paper.

Next, the process advances to 5T47 and after adding the contents of the main ID ID 44 to the current total memory 47, the process advances to 5T48 and adds the total tax amount to the tax total memory 46. Next, 5
After proceeding to T49 and opening the drawer 21 and clearing the 7 lags 50 during registration, proceeding to 5T50 and clearing the main item IZA 44 and the tax item IZA 45.

Therefore, according to this embodiment, if a product is registered incorrectly as an internal registration or an external registration when it should be a tax-exempt registration, on the contrary, a product is registered as an internal registration or an external registration when it should be an external registration or an internal registration. If you press the tax exempt/internal charge correction key 38 or the tax exempt/external charge correction key 39 immediately after registration, these mistakes will be automatically corrected, making correction operations extremely easy and quick. .

In the above embodiment, when entering product data, first press the tax exemption key 36 or the inner key 37 depending on whether the product data to be entered is tax exempt registration, internal registration, or external registration, and then press the The amount data of the product is entered using the number keys 32, and after fS and I&, the department key 33 is pressed. However, if the amount data, department data, etc. are converted into a bar code and attached to the product, the bar code can be used. It is also possible to input the data by optically reading it with a scanner. In this case, the data specifying whether the product data is tax exempt registration, internal registration, or external registration is also converted into a bar code, and the data is read and input by the scanner. You can also do it like this.

[Effects of the Invention] As described above, according to the present invention, by simply pressing the tax exemption/internal charge correction key or the tax exemption/outward charge correction key, it is possible to register a previously erroneously registered product as tax exempt, internal charge registration, or external charge registration. Since corrections can be made, the correction operation can be performed extremely easily and quickly, and the efficiency of accounting operations can be improved.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Figure 1 is a block diagram showing the overall configuration, Figure 2 is a diagram showing the contents of the RAM, Figure 3 is a diagram showing the keyboard, and Figure 4 is a tax-exempt key. Flowchart when you press , Figure 5 is a flowchart when you press the inward call key, Figure 6 is a flowchart when you press the department key, and Figure 7 is a flowchart when you press the tax exemption/inner call correction key. , FIG. 8 is a flowchart when the tax exemption/outside charge correction key is pressed, and FIG. 9 is a flowchart when the cash sum 4- is pressed. 11.13...CPU and ROM (control means) 1
4...RAM (storage means), 19...Keyboard, 38...Tax-free/inner call correction key 39...Tax-free/outer call correction key 43...Previous registration memory, 44...Main item sizer (sales total memory), 45...Tax item icon (taxable amount memory)
48...Tax exemption flag (tax specification flag memory), 4
- Internal tax flag (tax specification flag memory).

Claims (2)

[Claims] (1) A keyboard with a tax exemption/inclusive correction key, a tax designation flag memory that stores whether the product data input just before was registered as tax exempt or as an invoice, and a sales total memory that stores the total sales amount for one customer. , a storage means having a taxable amount memory for storing the taxable amount of one customer and a pre-registration memory for storing the amount data of the product data, and a control means, the control means is configured to control when the product data is input. , stores the amount data of the product data in the pre-registration memory, determines whether the product data is tax exempt registration or internal charge registration, and adds the amount data to the sales total memory in the case of tax exempt registration; , means for adding the amount excluding tax from the amount data to the sales total memory and the taxable amount memory in the case of internal charge registration, and when the tax exemption/internal charge correction key is pressed, the tax Determines whether the data registered immediately before is a tax-exempt registration or an in-payment registration based on the state of the multiplication designation flag memory, and in the case of tax-exempt registration, subtracts the tax included in the amount data in the previous registration memory from the sales total memory. In addition, the amount obtained by removing the tax from the amount data is added to the taxable amount memory, and in the case of internal charge registration, the tax included in the amount data in the previous registration memory is added to the sales total memory. and means for subtracting an amount obtained by removing a tax from the amount data from the taxable amount memory. (2) A keyboard with a tax exemption/external charge correction key, a tax specification flag memory that stores whether the product data input just before is tax exempt or external registration, a sales total memory that stores the total sales amount for one customer, 1 A storage means having a taxable amount memory for storing the customer's taxable amount and a pre-registration memory for storing the amount data of the product data; and a control means, the control means being configured to The amount data of the product data is stored in the pre-registration memory, and it is determined whether the product data is tax-exempt registration or outside registration.If the product data is tax-exempt registration, the amount data is added to the sales total memory, while outside registration In this case, means for adding the amount data to the sales total memory and the taxable amount memory, respectively; It is determined whether the data is tax-exempt registration or outside registration, and if the data is tax-exempt registration, the amount data in the previous registration memory is added to the taxable amount memory, while if it is outside registration, the amount data in the previous registration memory is added. A product sales data processing device comprising: means for subtracting from the taxable amount memory.