JPH06282757A - Article sales data processor - Google Patents

Abstract

PURPOSE:To improve work efficiency by preventing required various data from being unexpectedly erased by temporarily stopping the processing operatiom of a data erasing means with an erasure stop means when a preservation deciding means decides the necessity of preservation, and outputting previously set notification data from a stop notification means in such a state. CONSTITUTION:When updating a control program inside the program area of a RAM 13 for the version-up of a POS terminal 1, for example, in the POS terminal 1, the preservation deciding means of a CPU 11 confirms the presence/ absence of ordering data by retrieving the ordering data table of the RAM 13 when the update of the control program is started. When the remaining ordering data are confirmed, the preservation deciding means of the CPU 11 decides that it is necessary to preserve the ordering data, and the erasure stopping means of the CPU 11 temporarily stops the ordering data erasing operation by the data erasing means. In such a state, the interruption notification means of the CPU 11 reads a prescribed message from the message data table of a ROM 12 and displays it on a display 4.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a POS (Point Of Sale)
s) The present invention relates to a product sales data processing device such as a terminal.

[0002]

2. Description of the Related Art At present, in a commodity sales data processing device such as a POS terminal, for example, a data input means for inputting various data is formed by a keyboard or a bar code scanner,
A fixed storage means for fixedly storing various data such as an OS (Operating System) in advance is formed by a ROM (Read Only Memory), and a variable storage means for temporarily storing various data such as product data in a renewable manner is RAM (Random Access memory), and the data processing means for executing various data processing such as registration processing based on the stored data of the variable storage means and the fixed storage means, the input data of the data input means, etc.
(Central Processing Unit) and other structures.

Further, a POS terminal, which is one of such merchandise sales data processing devices, is generally an ISDN (Integ
rated Services Digital Network) and LAN (Local Are
a POS) or a host computer or the like via a communication line such as a Network). For example, by sending order data temporarily stored in the RAM which is the variable storage means to the host computer via the communication line, It is designed to improve work efficiency such as delivery work of shortage products.

In a POS terminal which is such a product sales data processing device, for example, a control program stored in a RAM which is a variable storage means may be updated for version upgrade. Since various conditions of data processing change when the control program or the like is updated, the format of order data or the like temporarily stored in the RAM which is the variable storage means is often changed. Therefore, in the POS terminal which is such a product sales data processing device, the data erasing means including the CPU or the like is temporarily stored in the RAM which is the variable storage means in association with the data processing such as the updating of the control program. By automatically erasing data and the like, it is possible to prevent an error from occurring in the subsequent data processing.

[0005]

In the above-described product sales data processing device such as the POS terminal, the data erasing means such as the CPU automatically orders the order data stored in the RAM in association with the data processing such as the updating of the control program. It is designed to be erased.

However, in this case, the unsent order data and the like are erased in the host computer, so that it becomes necessary to confirm the unsent order data and input it again, which delays the work. .

[0007]

The invention according to claim 1 is
Provided is a data input means for inputting various data, fixed memory means for fixedly storing various data such as control programs in advance, and variable storage means for temporarily storing various data such as product data in an updatable manner. Data processing means for executing various data processing such as registration processing based on the stored data of the variable storage means and the fixed storage means, the input data of the data input means, etc. is provided and executed by the data processing means. Data erasing means for erasing predetermined stored data of the variable storage means is provided in association with predetermined data processing, and storage determining means for determining whether or not various data to be erased by the data erasing means need to be stored. Provided,
When the storage determining means determines that the data needs to be stored, an erase stopping means is provided for temporarily stopping the processing operation of the data erasing means, and the erase stopping means outputs preset notification data in a state where the data erasing is temporarily stopped. An interruption notification means is provided.

According to a second aspect of the present invention, data input means for operating and inputting various data is provided, fixed storage means for fixedly storing various data such as a control program in advance is provided, and various data such as product data is stored. Data processing for providing various data processing such as registration processing based on storage data of the variable storage means and the fixed storage means, input data of the data input means, etc. Means is provided, and data erasing means for erasing predetermined stored data of the variable storage means in synchronism with predetermined data processing executed by the data processing means is provided, and various data to be erased by the data erasing means are stored. The storage erasing means for deciding whether or not the data need to be stored is provided. Provided erasure informing means for outputting the set broadcast data.

According to a third aspect of the present invention, data input means for operating and inputting various data is provided, fixed storage means for fixedly storing various data such as a control program in advance is provided, and various data such as product data is stored. Data processing for providing various data processing such as registration processing based on storage data of the variable storage means and the fixed storage means, input data of the data input means, etc. Means is provided, and data erasing means for erasing predetermined stored data of the variable storage means in synchronism with predetermined data processing executed by the data processing means is provided, and various data to be erased by the data erasing means are stored. Is provided with a storage determining means for determining whether or not there is a need for storage, and when the storage determining means determines that storage is required, the processing operation of the data erasing means is suspended. And a data printing means for printing out various data that needs to be saved in a state in which the data erasing is temporarily stopped by the erasing stopping means. An erasing control means for erasing by the erasing means is provided.

[0010]

According to the first aspect of the present invention, when the data erasing means erases the predetermined stored data of the variable storage means in association with the predetermined data processing executed by the data processing means, the various data to be erased Is determined by the storage determination means, and when the storage determination means determines that the storage is required, the erasing stop means temporarily suspends the processing operation of the data erasing means, and the erasing is temporarily set in advance. By outputting the notified notification data by the interruption notification means, it is possible to prevent accidental deletion of various necessary data.

According to a second aspect of the present invention, when the data erasing means erases the predetermined stored data of the variable storage means in association with the predetermined data processing executed by the data processing means, the various data to be erased The storage determination means determines whether or not it is necessary to store the data, and when the data erasing means erases the various data for which the storage determination means determines that the storage needs to be stored, the erase notification means outputs preset notification data. The user can be notified that various necessary data have been deleted.

According to a third aspect of the present invention, when the data erasing means erases the predetermined storage data of the variable storage means in association with the predetermined data processing executed by the data processing means, the various data to be erased The storage determination means determines whether or not the data needs to be stored. If the storage determination means determines that the data needs to be stored, the erase stop means suspends the processing operation of the data erase means, and the erase stop means suspends the data erase. In this state, the data printing means prints out various data that needs to be saved, and the erasing control means erases the various data for which printing has been completed by the data erasing means, thereby saving the contents of various data to be erased. be able to.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. First, as shown in FIG. 2, the POS terminal 1 which is the product sales data processing device has a drawer 2 for storing money (not shown) on the bottom of a flat box-shaped device body 3 as shown in FIG. It is formed integrally, and on the upper surface of the apparatus main body 3, displays 4 and 5 for shop assistants and customers, a keyboard 6 as a data input means, and an R / J (R)
(eceipt / Journal) The printer 7 and the card reader 8 are integrally formed, and the touch scanner 9 and the handset 10 which are data input means are detachably attached.

Further, in the POS terminal 1, as shown in FIG. 1 in terms of a circuit, various kinds of data such as an OS are fixed to a CPU 11 which is a data processing means for executing various kinds of data processing such as registration processing. ROM 12 which is a fixed storage means stored in advance, RAM 13 which is a variable storage means for temporarily storing various data such as application programs and order data in an updatable manner, an interface 15 for LAN 14, the drawer 2, the displays 4 and 5, The keyboard 6, the R / J printer 7, the card reader 8, the touch scanner 9, the clock circuit 16, the speaker 1.
7 and the like are connected by a bus 18.

Here, in this POS terminal 1, as illustrated in FIG. 4, an order data table 19 is formed in a predetermined storage area in the RAM 13, and the order data table 19 stores an order code and an order code. A large number of order data set by the quantity and the delivery date and time are stored for each number. Further, in the POS terminal 1, the RAM 13
A program area 20 is formed in a predetermined storage area, and a control program is stored in the program area 20. Further, in this POS terminal 1, the ROM 1
A message data table (not shown) is formed in a predetermined storage area 2 and various message data such as error messages and help messages are stored in the message data table together with an identification code.

Therefore, in this POS terminal 1, the CP
When the data processing means of U11 executes the update of the control program in the program area 20 of the RAM 13 as the predetermined data processing, the data erasure for erasing all the order data in the order data table 19 of the RAM 13 is linked with this. The CPU 11 and the like form a means and a saving determination means that determines whether or not the order data erased by the data erasing means needs to be saved. further,
In this POS terminal 1, when the storage determining means including the CPU 11 determines that the data needs to be stored, the erasing stopping means for temporarily stopping the processing operation of the data erasing means is the CPU 1
1 and the like, the interruption notifying means for displaying and outputting a message which is preset notification data in a state in which the erasing stop means composed of the CPU 11 etc. suspends the data erasing, the display 4 and the CPU 11 And the message data table of the ROM 12 described above.

In the POS terminal 1 according to the present embodiment, the keyboard 6 and the CPU 11 form erase control means for restarting the processing operation of the data erase means, which is temporarily stopped by the erase stop means as described above. And this CPU1
The report output means for printing out the execution contents of the processing operation of the data erasing means resumed by the erasing control means such as 1 as a fixed report report (not shown) includes the R / J printer 7, the CPU 11, and the RAM 13. Is formed by.

Further, the POS terminal 1 of this embodiment is a part of the POS system 21, and the POS system 21 includes a host computer 23 installed in one head office 22 as illustrated in FIG. Store computer 25 installed in each of a number of stores 24 and PSTN (Pub
lic Switched Telephone Network) 26, and the store computer 25 installed in an office (not shown) in the store 24 and a product sales data processing device installed in each of a number of sales floors (not shown) POS terminal 1
And the LAN 14 are connected to each other.

In this configuration, in the POS system 21, for example, the POS terminal 1 installed in each of a number of sales floors of one store 24 executes sales work by various information processing and accumulates various information. Therefore, one store computer 25 installed in the same store 24 as these many POS terminals 1 reads various information from each of the POS terminals 1 via the LAN 14, and, for example, in one store 24 You can check the sales status of multiple sales floors. Further, in this POS system 21, since the above-mentioned store computer 25 is installed in each of the many stores 24, one host computer 23 installed in the head office 22 is the PSTN 26.
By reading out various information from a large number of store computers 25 via, it is possible to comprehensively confirm the sales situation of a large number of stores 24, for example.

Then, in the POS terminal 1 of the POS system 21 as described above, for example, order data inputted by a clerk corresponding to the sales situation of various products is sequentially stored in the order data table 19 of the RAM 13. The order data temporarily stored in the order data table 19 is stored in the store computer 25 when the settlement process is executed.
Or to the host computer 23, the work efficiency such as the delivery work of the insufficient product is improved. In the POS terminal 1, the ordering data transmitted to the upper computer 23, 25 as described above is stored in the CPU.
The data erasing means 11 automatically erases the order data table 19 so that only the untransmitted order data is stored in the order data table 19 to prevent double transmission of the order data. It has become.

Here, in order to upgrade such a POS terminal 1, the program area 20 of the RAM 13 is updated.
The processing operation for updating the control program therein will be described in detail below with reference to the flowchart of FIG. First, in the POS terminal 1, when the control program update is started, the CP
The storage determination means of U11 searches the order data table 19 of the RAM 13 and confirms the presence or absence of order data. When the remaining order data is not confirmed, the data erasing means of the CPU 11 determines the order data table 19. After the initialization of the
The control program in the program area 20 of the AM 13 is updated, a fixed report report showing the contents of this update processing is printed out by the R / J printer 7, and the processing operation is ended.

By doing so, the POS terminal 1
Then, by automatically deleting the order data in the order data table 19 of the RAM 13 in synchronization with the update of the control program in the program area 20 of the RAM 13, an error such as a format mismatch of the order data due to the update of the control program is generated. It is designed to prevent

On the other hand, in this POS terminal 1, the saving determination means of the CPU 11 is RAM when starting the update of the control program.
When the order data remaining in the order data table 19 of 13 is confirmed, it means that all the order data remaining in the order data table 19 has not been transmitted yet and thus needs to be saved. Therefore, when the storage determination means of the CPU 11 determines that the order data needs to be stored in this way,
The erasing stop means of the CPU 11 temporarily stops the order data erasing operation by the data erasing means, and in this state, the CPU
The interruption notifying means 11 reads out predetermined message data from the message data table of the ROM 12 and outputs it on the display 4 for the clerk.

By doing so, as illustrated in FIG. 5, "since the host has unsent order data,
Program exchange is not possible. After operating the C key, either send or delete the order data. A message such as "is displayed on the display 4, and the clerk who visually recognizes this message clears the state by operating the keyboard 6 if desired and then selects whether to send or delete the order data by operating the keyboard 6. Will be specified.

Therefore, when the transmission of the order data is designated, the CPU 11 causes the order data table 1 in the RAM 13 to be executed.
The order data remaining in 9 is stored in the upper computer 23, 2
5, the order erasing data table 19 is initialized by the data erasing means, and when erasing the ordering data is designated, the data erasing means of the CPU 11 is the RAM 1
The order data table 19 of No. 3 is uniformly initialized. The CPU 11 that has completed the initialization of the order data table 19 in this way is sent to the RAM 1 as described above.
After updating the control program in the program area 20 of No. 3, the report report is printed out by the R / J printer 7 and the processing operation is ended.

By doing so, this POS terminal 1
Then, by initializing the order data table 19 of the RAM 13 in synchronization with the update of the control program in the program area 20 of the RAM 13, it is possible to prevent an error such as a format mismatch of the order data due to the update of the control program. ing. Moreover, in the POS terminal 1, if the order data remains in the order data table 19 that needs to be initialized when the control program is updated as described above, the initialization of the order data table 19 is temporarily stopped and the order is placed. Notify the user of the remaining data, and
Since the user is allowed to select whether to send or delete the remaining order data, it is possible to prevent the unsent order data from being accidentally deleted and contribute to the improvement of work efficiency.

Here, in the POS terminal 1 described above as an embodiment of the invention according to claim 1, even if unsent order data is deleted according to the user's request, a special processing operation linked to this is executed. Although not illustrated, the present invention is not limited to the above-described embodiment, and as in the invention according to claim 2, various kinds of data determined by the saving determination means such as the CPU 11 to be stored are stored in the CPU 11 or the like. It is also possible to implement the POS terminal 1 or the like provided with an erasing notification means for printing and outputting preset notification data when the data erasing means erases.

Therefore, such a POS terminal 1 will be described below as an embodiment of the invention according to claim 2 with reference to FIGS. 7 and 8. The POS terminal 1 of the present embodiment has the same main configuration as that of the POS terminal 1 of the first embodiment of the present invention. Therefore, the same names and reference numerals are used here for detailed description. Omit it.

First, in this POS terminal 1, the CPU 11
When the data erasing means such as the CPU 11 erases the order data determined to be stored by the storage determining means such as, for example, as shown in FIG. 7, the notification preset as “order data has been cleared.” The erasing notification means for printing out message data, which is data, on the report report 27 is formed by the R / J printer 7, the CPU 11, and the message data table of the ROM 12. In the POS terminal 1, the number detecting means for counting the number of order data items erased by the data erasing means such as the CPU 11 has a predetermined work area of the CPU 11 and the RAM 13 (not shown).
The number of order data detected by the number detection means is output to the report report 27 together with the message data by the number notification means.
And the like.

The processing operation in the case of updating the control program in the program area 20 of the RAM 13 in the POS terminal 1 having such a configuration will be described in detail below with reference to the flowchart of FIG. First, in this POS terminal 1, the saving determination means of the CPU 11 searches the order data table 19 of the RAM 13 to check the presence or absence of order data at the start of updating the control program, and the remaining order data is confirmed. If not, the data erasing means of the CPU 11 initializes the order data table 19 and then the data processing means of the CPU 11 makes the program area 20.
The control program therein is updated, and a fixed report report 27 indicating the contents of this update processing is printed out by the R / J printer 7. At this time, in this POS terminal 1, the CPU 11 refers to the work area of the RAM 13 to confirm the presence or absence of the count data, and if the presence of the count data is not confirmed, the issuance of the report report 27 is completed and the processing operation ends. It is supposed to do.

On the other hand, in this POS terminal 1, the save determination means of the CPU 11 is a RAM at the start of updating the control program.
When confirming the remaining order data in the order data table 19 of No. 13, the CPU 11 counts the number of the remaining order data and stores it in the work area of the RAM 13, and then initializes the order data table 19 by the data erasing means. The CPU 11 which has thus initialized the order data table 19 updates the control program in the program area 20 and then prints out the report report 27 with the R / J printer 7. When the CPU 11 that referred to the work area of the RAM 13 at the time of issuing the report 27 confirms the existence of the count data, this C
The PU 11 additionally prints the number data together with the message data read from the RAM 13 at the end of the report report 27, and then ends the processing operation.

By doing so, this POS terminal 1
Then, by initializing the order data table 19 of the RAM 13 in synchronization with the update of the control program in the program area 20 of the RAM 13, it is possible to prevent an error such as a format mismatch of the order data due to the update of the control program. ing. Moreover, in the POS terminal 1, when the order data is erased when the control program is updated as described above, the number of the erased order data is printed out in the report report 27 together with the message data. The user can simply confirm that the predetermined number of untransmitted order data has been deleted and use it for the subsequent work.

In the POS terminal 1 of the present embodiment, the message data is printed out when the order data is automatically erased as an embodiment of the invention described in claim 2. Since the data is automatically deleted and the contents become unknown, it is not practical when this is performed alone. Therefore, the POS of the invention according to claim 2
When the terminal 1 is implemented, for example, the invention according to claim 1 is combined with this, the deletion of untransmitted order data is temporarily stopped and the user is informed, and this user selects the data deletion. In this case, it is desirable to print out the message data.

Further, an embodiment of the invention described in claim 3 will be described below with reference to FIGS. 9 and 10. First, in this POS terminal 1, with the erasing stop means such as the CPU 11 temporarily stopping the erasing process of the order data, as shown in FIG.
The data printing means for printing out on the R / J printer 7 and C
The deletion control means is formed by the CPU 11 and the like and is formed by the PU 11 and the data printing means such as the CPU 11 and the like is deleted by the data erasing means by the data erasing means. In the POS terminal 1, when the data printing means prints the order data on the report report 28 as described above, it is preset in the message data table of the ROM 12 as "order work history host untransmitted data" or the like. The R / J printer 7, the CPU 11, and the ROM 12 are message printing means for reading out the message data that has been written and printing it out on the report report 28 together with the order data.
And a message data table.

The processing operation in the case of updating the control program in the program area 20 of the RAM 13 in the POS terminal 1 having such a configuration will be described in detail below with reference to the flowchart of FIG. First, this POS terminal 1
Then, at the start of updating the control program, the storage determination means of the CPU 11 searches the order data table 19 of the RAM 13 to check the presence or absence of the order data. If the remaining order data is not confirmed, the CPU 11
Data erasing means initializes the order data table 19 and then the data processing means of the CPU 11 causes the program area 2
The control program in 0 is updated, a fixed report report 28 showing the contents of this update processing is printed out by the R / J printer 7, and the processing operation is ended.

On the other hand, in this POS terminal 1, the saving determination means of the CPU 11 is a RAM at the start of updating the control program.
When the order data remaining in the order data table 19 of 13 is confirmed, the erasing stop means of the CPU 11 temporarily stops the erasing operation of the order data by the data erasing means, and in this state, the predetermined message data in the message data table of the ROM 12 is reached. And the order data in the order data table 19 are printed out at the head of the report report 28 by the R / J printer 7. Therefore, after the completion of such print output, the data erasing means of the CPU 11 initializes the order data table 19, and then the data processing means of the CPU 11 updates the control program in the program area 20, and a report showing the contents of this updating processing. Report 28 R /
The J printer 7 continuously prints out and ends the processing operation.

By doing so, the POS terminal 1
Then, the ordering data table 19 is initialized in synchronization with the updating of the control program in the program area 20 of the RAM 13 to prevent an error such as a mismatch of the ordering data format due to the updating of the control program. . Moreover, in this POS terminal 1, since the order data is printed out on the report report 28 and then deleted when the control program is updated as described above, the user can delete the deleted untransmitted order data. You can easily check the contents and use it for subsequent work.

Further, in the POS terminal 1 of this embodiment, when the control program in the program area 20 of the RAM 13 is updated as described above, the order data is automatically printed out on the report report 28 and then deleted. As an example,
For example, the order data to be erased in this way is transmitted to another POS terminal 1 or higher-level computers 23, 25, etc., and the order data is reported only when this cannot be transmitted. Report 2
It is also possible to carry out erasing after printing out on 8.

In the POS terminal 1 of this embodiment, the order data is automatically printed out and erased as an embodiment of the invention described in claim 3. By combining the invention described in claim 1 with the invention described in claim 1, the deletion of untransmitted order data is temporarily stopped to notify the user, and when the user selects data deletion, the order data is printed out. Anything can be done.

Further, the POS terminal 1 of the various embodiments described above.
In the above, erasing the predetermined data in association with the data processing has been illustrated as erasing the order data when the control program is updated, but the present invention is not limited to the above embodiment, and various types of CPU 11 can be used. It can be applied to erase various data in synchronization with data processing.

[0041]

According to the first aspect of the present invention, the storage erasing means is provided with a storage determining means for determining whether or not various data to be erased by the data erasing means need to be stored. By providing an erasing stop means for temporarily stopping the processing operation of the erasing means, and by providing an interruption notifying means for outputting preset notification data in a state in which the erasing stop means temporarily stops the data erasing, various necessary data are provided. It has an effect that it can contribute to the improvement of work efficiency by preventing the inadvertent erasure.

According to the second aspect of the present invention, there is provided storage determination means for determining whether or not the various data to be erased by the data erasing means need to be stored. By providing the deletion notifying means that outputs the preset notification data when the data deleting means deletes, it is possible to notify the user that various necessary data have been deleted and contribute to the improvement of the work efficiency thereafter. It has the effect of being able to do so.

According to the third aspect of the present invention, the data erasing means is provided with a storage determining means for determining whether or not various data to be erased by the data erasing means need to be stored. Is provided with an erasing stop means for temporarily stopping the processing operation, and the erasing stop means is provided with a data printing means for printing out various data that needs to be saved in a state where the data erasing is temporarily stopped, and the data printing means outputs the printing By providing the erasing control means for erasing the completed various data by the data erasing means, it is possible to save the contents of the various data to be erased and contribute to the improvement of the work efficiency thereafter. .

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a circuit structure of a POS terminal which is an embodiment of the product sales data processing device according to the first aspect of the invention.

FIG. 2 is a perspective view illustrating the appearance of a POS terminal.

FIG. 3 is a schematic diagram illustrating the overall structure of a POS system including a POS terminal as a part.

FIG. 4 is a memory map exemplifying a storage structure of an order data table of a RAM that is variable storage means.

FIG. 5 is a front view illustrating a display of a POS terminal that has displayed and output message data that is notification data.

FIG. 6 is a flowchart illustrating a processing operation when the POS terminal updates the control program.

FIG. 7 is a front view illustrating a report report in which message data, which is notification data, is printed out by a POS terminal, which is an embodiment of the product sales data processing device according to the second aspect of the invention.

FIG. 8 is a flowchart illustrating a processing operation when the POS terminal updates the control program.

FIG. 9 is a front view illustrating a report report in which message data, which is notification data, is printed out by a POS terminal, which is an embodiment of the product sales data processing device according to the third aspect of the invention.

FIG. 10 is a flowchart illustrating a processing operation when the POS terminal updates the control program.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Product sales data processing device 4, 11, 12 Interruption notification means 6, 9 Data input means 7, 11, 12 Deletion notification means 7, 11 Data printing means 11 Data processing means, data erasing means, storage judging means, erasing stop means , Erasure control means 12 fixed storage means 13 variable storage means

Claims (3)

[Claims] 1. A data input means for inputting various data, fixed storage means for fixedly storing various data such as a control program in advance, and variable storage for temporarily storing various data such as product data in an updatable manner. Means, data processing means for executing various data processing such as registration processing based on stored data of the variable storage means and the fixed storage means, input data of the data input means, etc., and the data processing means Data erasing means for erasing predetermined stored data of the variable storage means in conjunction with predetermined data processing, and storage determining means for determining whether or not various data to be erased by the data erasing means need to be stored. , The erasing stop means for temporarily stopping the processing operation of the data erasing means when the storage deciding means determines that the erasure is necessary, and the erasing stop means erases the data. A product sales data processing device, comprising: interruption notification means for outputting preset notification data in a temporarily stopped state. 2. A data input means for inputting various data, fixed storage means for fixedly storing various data such as a control program, and variable storage for temporarily storing various data such as product data in an updatable manner. Means, data processing means for executing various data processing such as registration processing based on stored data of the variable storage means and the fixed storage means, input data of the data input means, etc., and the data processing means Data erasing means for erasing predetermined stored data of the variable storage means in conjunction with predetermined data processing, and storage determining means for determining whether or not various data to be erased by the data erasing means need to be stored. An erasing notification means for outputting preset notification data when the data erasing means deletes various data for which the storage deciding means judges that the data needs to be saved. A product sales data processing device comprising: 3. A data input means for inputting various data, fixed storage means for fixedly storing various data such as a control program, and variable storage for temporarily storing various data such as product data in an updatable manner. Means, data processing means for executing various data processing such as registration processing based on stored data of the variable storage means and the fixed storage means, input data of the data input means, etc., and the data processing means Data erasing means for erasing predetermined stored data of the variable storage means in conjunction with predetermined data processing, and storage determining means for determining whether or not various data to be erased by the data erasing means need to be stored. , The erasing stop means for temporarily stopping the processing operation of the data erasing means when the storage deciding means determines that the erasure is necessary, It is provided with a data printing means for printing out various data that needs to be stored in a temporarily stopped state, and an erasing control means for erasing the various data for which the data printing means has completed printing out by the data erasing means. Product sales data processing device.