JPH0833957B2 - Product sales data processor - Google Patents

Description

TECHNICAL FIELD The present invention relates to a product sales data processing device capable of performing a product registration operation by a customer's self-service.

[Prior Art] As a conventional product sales data processing device of this type, for example, there is one described in Japanese Patent Publication No. 1-52794.
This is the first item that weighs all the products purchased by customers.
, A code scanner for reading a product code attached in advance to the product weighed by the first scale, and a second scale for mounting the product whose product code is read by the code scanner, When the change amount of the first scale and the change amount of the second scale match, the sales of the product whose product code is read by the scanner is registered, and the first scale, the initial measurement value, and the second scale are registered. When the measured values match, the total of the products registered for sale is displayed and output. By doing this, all the products purchased by the customer can be sold simply by placing the products purchased by the customer on the first scale and reading the product code one by one while moving the product to the second scale. You will be able to register.

[Problems to be Solved by the Invention] However, in the conventional product sales data processing device of this type, even if the customer himself / herself performs the product registration operation by himself / herself, the burden on the store side is reduced and the payment time is shortened. Just being done, the customer had no privilege whatsoever. Therefore, self-service was difficult to spread.

Therefore, according to the present invention, it is possible to give a discount benefit to a customer by performing a product registration operation by the customer's self-service, and further increase the spread rate of self-service to further reduce the burden on the store side and the payment time. An object of the present invention is to provide a merchandise sales data processing device that can be scaled.

[Means for Solving the Problem] In the product sales data processing device of the present invention, at least a normal unit price of the product and a self unit price lower than the normal unit price are preset in correspondence with the product code assigned to each product. A self-registration device that provides a product file that is
And a money registration device connected to the self-registration device via a line and capable of data access to the product file.

The self-registration device has an input unit for inputting sales information such as a product code and quantity of a sales product, and a self-price calculation means for calculating a price from a self-unit price corresponding to the product code input via the input unit. Instructing means for instructing the end of inputting the merchandise sales information from the input section, and when the instructing end is instructed by the instructing means, individual sales data is created from the merchandise sales information input up to that point and the price calculated by the calculating means A data creating means is provided.

On the other hand, the money registration device has an input unit for inputting sales information such as a product code and quantity of a sales product, and a normal price calculation means for calculating a price from a normal unit price corresponding to the product code input through the input unit. Data calling means for calling individual sales data created by the self-registration device, registration processing means for performing sales registration processing based on individual sales data called by the calling means or price information calculated by the calculating means, this registration processing There is provided total output means for outputting the total of the transactions registered for sale by the means.

[Operation] In the device of the present invention having such a configuration, when sales information such as a product code and quantity of a sold product is input from the input unit of the self-registration device, the self-unit price corresponding to the product code is input from the product file. It is detected and the price is calculated based on this self-unit price. On the other hand, when similar product sales information is input from the input unit of the money registration device, the normal unit price corresponding to the corresponding product code is detected from the product file, and the price is calculated based on this normal unit price. Therefore, by using the self-registration device when the customer himself / herself performs the registration operation of the purchased merchandise, and when the store side performs the registration operation, by using the money registration device,
It will be possible to offer products for self-service customers at a self unit price that is cheaper than the normal unit price.

The sales registration of the product registered and operated by the self-registration device is performed on the cash registration device side by calling the corresponding individual sales data by the cash registration device, and the total is output. That is, since the payment of the merchandise registered and operated by the self-registration device is made on the money registration device side, the clerk only needs to be arranged on the money registration device side.

Embodiment An embodiment in which the present invention is applied to the POS (point of sale information management) system shown in FIG. 1 will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a file processor for managing a product file, which will be described later. For this file processor 1, a plurality of self-registering devices 2 and a plurality of POS terminals (cash registering devices) 3 are provided. Are connected in-line via lines 4 and 5, respectively. Here, for example, the file processor 1 is installed in the office of the store, each POS terminal 3 is installed in the accounting place near the exit of the store, and each self-registration device 2 is connected to the sales floor and the accounting place in the store. It is installed in the space between.

FIG. 2 is a perspective view showing an external configuration of the self-registration device 2. As shown in the figure, the device main body 12 is placed on the upper surface of the base 11. A self-registration keyboard 13 and a receipt issuing port 14 are provided on the front surface of the apparatus main body 12, and a stationary scanner 15 for reading a bar code is provided on the upper surface. Further, a dot display device 16 for displaying the product name, price, etc. of the product is attached to an arm 17 provided upright on the rear surface of the device body 12.

On the keyboard 13, a numeric key 13a for inputting numerical data such as the number of products, a total key 13b as an instruction means for instructing the end of input of product sales information, and a cancellation of the product sales information input immediately before. Various keys such as a cancel key 13c for instructing are arranged.

Incidentally, the keyboard 13 and the stationary scanner 15 constitute an input unit for inputting sales information such as a product code and quantity of a sold product.

On the other hand, one side of the stand 11 has a scale for the self-registration device.
18 are installed. The scale 18 includes a scale section 18a for collectively weighing the products purchased by the customer, and an exterior of the scale section 18a, and hanging sections 19a ₁ and 19a ₂ of a bag 19 provided in the store above the scale section 18a. It comprises a pair of hooks 18b ₁ and 18b ₂ for stopping and an L-shaped member 18c fixed thereto. And this scale 18
The device main body 12 and the device main body 12 are connected by a cable 20.

FIG. 3 is a perspective view showing the external structure of the POS terminal.
As shown in the figure, a POS keyboard 32 is provided on the front side of the upper surface of the terminal body 31, and a screen display 33 such as a CRT and an RJ printer 34 for printing on receipts and journals are provided on the rear side of the upper surface. .

The keyboard 32 is provided with various keys such as a numeral key 32a, a subtotal key 32b, a current total key 32c, and a clear key 32d, which are provided in a normal POS keyboard. Also, "Register"
A mode switch 32e for switching various business modes such as “payment” and “setting” is also provided on the keyboard 32.

A receipt issuing port 34a and a journal monitoring window 34b are formed in the housing of the RJ printer 34.

On the other hand, a drawer 35 for storing cash etc. is provided on the front surface of the apparatus main body 32. In addition, a scale 36 for POS terminals and a hand scanner 37 for reading barcodes
Are connected to the apparatus main body 32 via a cable 38 and a cable 39, respectively. The scale 36 is a scale section 36a.
And a support member 36b for supporting the balance section 36a from the lower surface.

Incidentally, the keyboard 32 and the hand scanner 37 constitute an input unit for inputting sales information such as a product code and quantity of a sold product.

FIG. 4 is a control block diagram of the self-registration device. A CPU (central processing unit) 41, which constitutes the main body of the control unit, is connected to storage units of a ROM 43 and a RAM 44 via a bus line 42. The ROM 43 stores program data and the like for the CPU 41 to control each unit. RAM44 has a fifth
As shown in the figure, the work buffer 44a in which the codes and points of each product sold in one transaction are accumulated, the amount totalizer 44b for summing the prices of the above products, and the minimum weight set for each of the above products. And various memory areas such as a weight totalizer 44c for summing the maximum weight, an ID counter 44d for generating a series of ID numbers for identifying each transaction, and the like.

Further, the file processor 1 via the line 4, an A / D (analog / digital) converter 45 for converting the weight data measured by the balance section 18a of the self-registration device scale 18 into a digital count value. An interface 46 for controlling data transmission / reception to and from the keyboard controller 47 to which a key signal from the self-registration keyboard 13 is input, a scanner controller 48 to which a read signal from the stationary scanner 15 is input, A display controller 49 that drives and controls the dot display 16, and a printer controller 51 of a printer 50 that prints on a receipt
Are connected to the CPU 41 via the bus lines 42, respectively.

FIG. 6 is a control block diagram of the POS terminal 3. A storage unit of a ROM 63 and a RAM 64 is connected to a CPU 61 that constitutes the control unit main body via a bus line 62. The ROM 63 stores program data and the like for executing various business modes such as “registration”, “payment”, and “setting”. The RAM 64 is formed with various memory areas required to execute the various business modes.

Also, the weight data measured by the balance section 36a of the POS terminal scale 36 is converted into a digital count value.
A / D converter 65, interface 66 for controlling data transmission / reception to / from the file processor 1 via the line 5, keyboard controller 67 to which a key signal from the POS keyboard 32 is input, the hand A scanner controller 68 to which a reading signal from the scanner 37 is input, a display controller 69 for driving and controlling the screen display 33, and a printer controller 70 of the RJ printer 34 are respectively connected to the CPU 61 via the bus line 62. There is.

FIG. 7 is a control block diagram of the file processor 1. The CPU 71, which constitutes the main body of the control unit, is connected between each storage unit of the product file 75 formed in the ROM 73, the RAM 74, the hard disk, etc. via the bus line 72 and each self-registration device 2 via the line 4. Each PO is controlled through the first interface 76 for controlling data transmission and reception and the line 5.
A second interface 77 for controlling data transmission / reception with the S terminal 3 is connected.

Here, in the product file 75, as shown in FIG. 8, a product code attached to each product in advance, a product name, a normal unit price, a self-unit price set lower than the normal unit price, a minimum weight of each product, and Maximum weight is preset. In addition, a cumulative area is formed to accumulate the sales amount and the number of sales of each product for each product. The minimum weight and the maximum weight of each product are determined in consideration of an error range caused by manufacturing error or the like.

Further, in the RAM 74, as shown in FIG. 9, individual sales data (ID number, product code of each product to which sales information is input, which is edited by each self-registration device 2 and transmitted via the line 4, Points and price, total amount, minimum total weight,
A table 80 is formed for managing the maximum total weight value, check bit [CDV], and substitute flag).

Therefore, the CPU 41 of the self-registration device 2 is programmed so as to execute the processing shown in FIG. That is, it is determined whether a key signal from the keyboard 13 is input as ST (step) 1 or a bar code reading signal from the stationary scanner 15 is input as ST2. If neither signal is input, the process waits.

Scanner 15 via scanner controller 48 in ST2
When the barcode reading signal from is input, it is determined in ST3 whether or not the barcode is the product code attached to the product in advance. Then, in the case of a code other than the product code, the input of the barcode read signal is an error.

On the other hand, in the case of the product code, an inquiry message is created using the product code as a key and transmitted to the file processor 1 via the line 4. File processor 1
Upon receiving the product code inquiry message from the self-registration device 2, the CPU 71 accesses the product file 75 and reads the product name, self unit price and weight range data corresponding to the product code in the message and creates a response message. Then, since the reply is sent to the self-registration device 2 inquired, the CPU 41 of the self-registration device 2 receives the response message. And
If the numerical data has been entered by the numeric keypad 13a of the keyboard 13 in advance, the numerical data is used as the score. If not, the score is set to "1" and the score is multiplied by the self-unit price in the response message. Is calculated (self-price calculation means). Then, the calculated price is displayed on the display 16 together with the product name in the response message, and the printer 50 is driven to print out the receipt. Further, the product code, the score, and the price are stored in the work buffer 44a.
Further, the calculated price is added to the amount totalizer 44b, the minimum weight and the maximum weight of the weight range data in the response message are added to the respective weight totalizers 44c, and the process returns to ST1.

On the other hand, when a key signal is input from the keyboard 13 via the keyboard controller 47 in ST1, the type of the input key is discriminated from the key signal and various key processes corresponding to the input key are executed.

Here, when the input key is the numeric key 13a, the corresponding numerical data is temporarily stored in a predetermined area of the RAM 44. In the case of the cancel key 13c, the product code, points, and price last accumulated in the work buffer 44a are deleted, and the totalizers are added.
The value added last to 44b and 44c is subtracted.

Further, in the case of the total key 13b, as shown in the figure, individual sales data in the data format shown in FIG. 9 is created based on the contents of the work buffer 44a, the amount totalizer 44b, the weight totalizer 44c, and the ID counter 44d ( Data creation means). That is, the ID number of the ID counter 44d, each product code of the work buffer 44a, the points and the price, the total amount of the amount of money totalizer 44b, the minimum weight total value and the maximum weight total value of the weight totalizer 44c are incorporated. Check bit [CD
V] is determined, for example, by the numerical value of the total amount. The substitute flag is turned off.

Next, the measurement data of the count value is fetched through the A / D converter 45 and converted into the weight value. And ST4
As a result, it is determined whether or not this weight value falls between the minimum total weight value and the maximum total weight value stored in the weight totalizer 44c.

If it is determined that the weight is within the weight range, the printer 50 is driven, the total amount of the individual sales data is printed out on the receipt, and the ID number, total amount, minimum total weight value, maximum total weight The value and the check bit are converted into a bar code, the bar code is printed out on the receipt, and a purchase detail receipt 90 as shown in FIG. 12 is issued from the receipt issuing port 14. In addition, the above individual sales data is transferred to the file processor 1 via the interface 46 and the line 4.
Send to. After that, the ID counter 44d is updated by "+1", the work buffer 44a and the totalizers 44b and 44c are cleared, and the process returns to ST1.

It should be noted that the CPU 71 of the file processor 1 receives each individual sales data sent from each self-registration device 2, and receives the individual sales data, and sequentially stores them in the management table 80 of the RAM 74.

In ST4, when it is determined that the weight value measured by the weighing unit 18a does not fall within the weight range, the printer 50 is driven and the currently printed receipt is issued as a cancellation receipt from the receipt issuing port 14 and , Display a predetermined error message on the display 16. In addition, the created individual sales data is deleted. After that, the work buffer 44a and the totalizers 44b and 44c are cleared, and the process returns to ST1.

On the other hand, the CPU 61 of the POS terminal 3 is programmed so as to execute the processing shown in FIG. 11 in the state where the "registration" mode is selected by the mode switch 32e. That is, it is determined whether the key signal from the keyboard 32 is input in ST11 or the bar code reading signal from the hand scanner 37 is input in ST12. If neither signal is input, the process waits.

Scanner 37 via scanner controller 68 at ST12
When the bar code reading signal from is input, it is determined whether the bar code is a product code attached to the product in advance as ST13, or the bar code printed on the purchase statement receipt 90 as ST14. It If the barcode is not one of the barcodes, the input of the barcode read signal is an error.

When the bar code input of the product code is determined in ST13, an inquiry message is created using the product code as a key and transmitted to the file processor 1 via the line 5. The CPU 71 of the file processor 1 receives the product code inquiry message from the POS terminal 3 and receives the product file.
75 is accessed, the product name and the normal unit price corresponding to the product code in the message are read, a response message is created, and the reply message is sent back to the POS terminal 3 inquired.
The CPU 61 receives the response message. Then, if the numerical data has been input in advance by the numeric key 32a of the keyboard 33, the numerical data is used as the score, and if not, the score is set to "1" and the score is multiplied by the normal unit price in the response message. To calculate the price (normal price calculation means).
Next, the calculated price is displayed on the display device 33 together with the product name in the response message, and the printer 34 is driven to print out the receipt and the journal. Further, the price and the points are respectively accumulated in a predetermined area of the RAM 64, and are sent to the file processor 1 as product sales data of the corresponding product code, and the process returns to ST11.

When the CPU 71 of the file processor 1 receives the product sales data from each POS terminal 1 via the line 5, the CPU 71 of the file processor 1 accumulates the price and points in the data in the accumulating area of the product file 75 for each corresponding product code. Has become (registration processing means).

If the bar code input on the purchase receipt 90 is determined in ST14, the ID number in the bar code is used as a key to make an inquiry to the file processor 1 and the corresponding ID stored in the management table 80 of the RAM 74. Read the individual sales data of the number (data calling means). Then, the surrogate flag in this individual sales data is checked. Here, when the substitute flag is on, the operation of reading the individual sales data is regarded as an error. On the other hand, when the substitute flag is in the off state, the measurement data of the count value is fetched through the A / D converter 45 and converted into the weight value. Then, it is determined whether or not this weight value falls between the minimum total weight value and the maximum total weight value stored in the weight totalizer 44c. Here, if the weight does not fall within the weight range, the operation of reading the individual sales data is regarded as an error.

On the other hand, when it is determined that the weight value measured by the balance section 36a falls within the predetermined weight range, the file processor 1 is instructed to register the corresponding individual sales data. In addition, the total amount in the individual sales data is displayed on the display unit 33.
And the printer 34 is driven to print out on the receipt and the journal (total output means), the receipt is issued from the receipt issuing port 34a as the receipt 100 shown in FIG. 13, and the process returns to ST11.

When the CPU 71 of the file processor 1 receives the instruction to register the individual sales data from each POS terminal 1 via the line 5, the CPU 71 turns on the substitute flag of the corresponding individual sales data in the management table 80. , Product file 75
The points and prices of the individual sales data are accumulated in the cumulative area for each corresponding product code (registration processing means).

On the other hand, when a key signal is input from the keyboard 32 via the keyboard controller 67 in ST11, the type of the input key is determined from the key signal, and various key processes corresponding to the input key are executed.

Here, when the input key is the numeric key 32a, the corresponding numerical data is temporarily stored in a predetermined area of the RAM 64. In the case of the subtotal key 32b, the subtotal amount of one transaction accumulated in the RAM 64 is displayed on the display device 33, and the printer 34 is driven to print out the receipt and the journal. Current key 32
In the case of c, the total amount of one transaction accumulated in the RAM 64 is displayed on the display 33, the printer 34 is driven to print out the receipt and the journal, and the receipt is issued from the receipt issuing port 34a. ing.

In the supermarket etc. in which the POS system of this embodiment configured as described above is introduced, the customer can select whether to perform self-service registration operation of the product purchased by the customer or to have the shop side perform the operation. . Then, the customer who has selected self-registration goes to the installation location of the self-registration device 2 with the product purchased at the sales floor. Here, the customer first takes out the bag 19 provided in the store, and hooks the grip portions 19a ₁ and 19a ₂ on the hooks 18b ₁ and 18b ₂ of the scale 18. Next, the bar codes of all the purchased products are sequentially read by the stationary scanner 15 and then packed in the bag 19. Then,
The product file 75 of the file processor 1 is accessed by the self-registration device 2, and the self-unit price set lower than the normal unit price is read together with the product name and weight range data corresponding to the product code of the product whose barcode is read. . Then, the self unit price is multiplied by a score to calculate the price, and the RAM4 in the self registration device 2 is
The sum of 4 is added to the totalizer 44b. Further, the product code, the number of points and the price are stored in the work buffer 44a of the RAM 44, and the minimum weight and the maximum weight of the read weight range data are added to the weight totalizer 44c.

Then, when the customer finishes reading the barcodes of all the products he / she purchased, the current key 13 on the keyboard 32
Key in b. Then, the sale item information (item code, points, price) accumulated in the work buffer 44a of the RAM 44, the total amount information accumulated in the amount totalizer 44b, and the minimum and maximum weight accumulated in the weight totalizer 44c. The total value information and a series of ID numbers generated by the ID counter 44d are incorporated in the individual sales data message together with the check bit and the off state substitute flag. On the other hand, in the weighing unit 18a, all the products packed in the bag are weighed, and when it is confirmed that the weight value is within the range of the minimum weight total value to the maximum weight total value, the individual sales data is The message is transmitted to the file processor 1, and is stored and saved in the management table 80 of the RAM 74 in the file processor 1.

Also, as shown in FIG. 12, the receipt issue port 14 prints the item name and price of each item, the total amount, the ID number, the total amount, the minimum and maximum total weight, and the bar code consisting of check bits. Since the detailed receipt 90 is issued, the customer cuts off the detailed receipt 90 and the POS terminal 3
Make payments by going to the accounting location where is installed.

When the customer who self-registers for payment, the store clerk who operates the POS terminal 3 puts the bag 19 filled with all the products purchased by the customer on the scale section 36a of the scale 36 and at the bar of the detailed receipt 90. The code is read by the hand scanner 37. Then, the ID number in the bar code is used as a key to search the management table 80 in the RAM 74 of the file processor 1 and individual sales data having the same ID number is read. Then, when it is confirmed that the weight value measured by the balance section 36a is included in the total weight range in the individual sales data, the total amount of money of the customer is displayed on the display unit 33, and As shown in the figure, the receipt 100 on which the total amount is printed is issued from the receipt issuing port 34a. Then, the clerk cuts the receipt 100 and hands it to the customer when the customer receives the payment corresponding to the total amount. If change is required, change will be collected from the cash stored in the drawer 35 and handed to the customer. This completes the transfer of money to and from the customer who has self-registered.

Note that the registration process of the product purchased by the customer whose money has been exchanged is performed based on the sales product information of the corresponding individual sales data. The individual sales data including the registered sale item information is distinguished from the unregistered data by turning on the substitute flag.

On the other hand, customers who do not select self-registration go directly to the accounting place and pay with the purchased product. In this case, PO
The clerk operating the S terminal 3 sequentially reads the bar codes of all the products purchased by the customer using the hunt scanner 37. Then, the POS terminal 3 accesses the product file 75 of the file processor 1, and the normal unit price is read together with the product name corresponding to the product code of the product whose barcode is read. Then, the normal unit price is multiplied by a score to calculate a price, and the price is registered in a predetermined memory. Then, when the bar code reading operation for all the products is completed, the clerk operates the current total key 32c of the keyboard 32 by key input operation. Then, the total price of all products purchased by the customer is displayed on the display unit 33, and the receipt on which the detailed data of all the products and the total price are printed is a receipt issuing port.
It will be issued from 34a, so it will be handed to the customer in exchange for payment. This is the end of the money transfer with customers who have not registered themselves. In addition, in this case, the packing work of the product is POS
The registration may be performed by the clerk after the registration at the terminal 3 or by the customer himself / herself.

As described above, according to the present embodiment, when the registration operation of all the products purchased by the customer is performed by the self-registration device 2 by the self-service, all the self-unit prices set lower than the normal unit price are used. The product will be sold. In other words, the customer is given the discount benefit by performing the product registration operation by self-service. Therefore, the customer is more willing to select self-service and the spread rate increases, so that the burden on the clerk is further reduced and the payment time at the POS terminal 3 is further shortened.

In addition, customers who have self-registered can purchase unregistered products in bags 19
If you try to make a payment by packing in, the weight value of all products weighed on the scale 36 on the POS terminal 3 side will be different from the set weight total value calculated by the self-registration device 2, and an error will occur. As in the past, this type of fraud is prevented. However, since an appropriate allowable range is set for the set weight value for each product, it is possible to reduce the inconvenience of causing an error due to putting accessories other than the product (spoons for frozen desserts, straws for drinks, etc.) in the bag. It becomes easier for customers to handle than before.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the file processor 1 and the PO
Although the S terminal 3 is provided separately, the function of the file processor 1 may be incorporated in any one of the POS terminals 3. Further, in the above-described embodiment, a barcode including an ID number or the like is printed out on the detailed receipt 90 issued by the self-registration device 2, and the corresponding POS terminal 3 reads the barcode of the detailed receipt 90 to obtain the corresponding individual item. Although an example of extracting sales data was shown, the ID number is digitally printed as it is on the detailed receipt 90, and the keyboard 32 is displayed on the POS terminal 3 side.
Alternatively, the corresponding individual sales data may be taken out by inputting the ID number of the detailed receipt 90 by the number key 32a. In addition, it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[Effects of the Invention] As described in detail above, according to the present invention, a discount benefit can be given to a customer by performing a product registration operation by the customer's self-service, thereby increasing the penetration rate of self-service. It is possible to provide a merchandise sales data processing device that can further reduce the burden on the store side and shorten the payment time.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 1 is a block diagram showing the overall configuration of the system, FIG. 2 is a perspective view showing the external configuration of a self-registration device, and FIG. 3 is a POS terminal device. FIG. 4 is a perspective view showing an external configuration, FIG. 4 is a control block diagram of the self-registration device, FIG. 5 is a main memory configuration diagram of RAM in the self-registration device, and FIG. 6 is a control block diagram of a POS terminal.
FIG. 7 is a control block diagram of the file processor, FIG. 8 is a block diagram of a product file, FIG. 9 is a block diagram of an individual sales data management table, and FIG. 10 is a flow chart showing the operation of the self-registration device according to the present invention. FIG. 11 is a flow chart showing the operation of the POS terminal according to the present invention, FIG. 12 is an example of a detailed receipt, and FIG. 13 is an example of a receipt. 1 ... File processor, 2 ... Self-registration device, 3
...... POS terminal, 13b …… Tally key, 15 …… Stationary scanner, 18 …… Scale, 33 …… Screen display, 34 …… RJ printer, 36 …… Scale, 37 …… Han scanner, 75… … Product file, 80… Individual sales data management table, 90…
… Details receipt, 100… receipt.

Claims (1)

[Claims] 1. A product file in which at least a normal unit price of the product and a self unit price lower than the normal unit price are preset in correspondence with a product code assigned to each product, and data access to the product file is possible. And an input unit for inputting sales information such as a product code and quantity of a sold product, a self-price calculation unit for calculating a price from a self-unit price of the product file corresponding to the product code input through the input unit, Instructing means for instructing the end of inputting the merchandise sales information from the input unit, and when the end of the input is instructed by the instructing means, individual sales data is created from the merchandise sales information input up to that point and the price calculated by the calculating means. And a self-registration device having a data creating means for connecting to the self-registration device via a line, Data access that is possible, selling commodity code of goods, input unit for inputting sales information such as quantity,
Normal price calculation means for calculating the price from the normal unit price of the product file corresponding to the product code input via the input section, data calling means for calling individual sales data created by the self-registering device, and this calling A registration processing means for performing sales registration processing based on the individual sales data called by the means or the price information calculated by the arithmetic means, and a total output means for outputting the total of the transactions registered for sales by the registration processing means A product sales data processing device comprising a cash registration device.