JPH0670831B2 - Electronic cash register - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention has a function of automatically changing a selling unit price for increasing a discount rate at predetermined time intervals when discounting a selling unit price set for each department. Electronic cash register

[Prior Art] For example, in a supermarket that sells fresh foods, it is not possible to carry over the products until the next day. Often changed to. On the other hand, in a large-scale supermarket, the electronic cash registers ECR1 to ECRN installed in each sales floor are connected to one data collection device DCR via a transmission line. When changing the unit price with the passage of time, each change time, the department code changed at each change time, and the change unit price are stored in the data collection device DCR, and the unit is also incorporated. When the clock circuit indicates the corresponding time, the department code and the change unit price are sent to each electronic cash register.

Each electronic cash register that receives the department code and the modified unit price changes the sales unit price of the corresponding department code in the department unit price memory formed in its own storage unit to the modified unit price transmitted from the data collection device DCR.

[Problems to be Solved by the Invention] However, as described above, the department code and the changed unit price are received from the data collection device (DCR) at predetermined intervals to change the sales unit price of the own unit unit price memory. The electronic cash register that was used still had the following problems. That is, since the data collection device needs to store each change time and each change unit price at that time for each department code, the storage capacity required by the data collection device increases.

Also, since it is necessary to perform data transmission between each electronic cash register and the data collection device each time the change time is reached, the transmission line connecting each electronic cash register and the data collection device is congested at the corresponding time. Then, there is a concern that the original work of transmitting the sales data from each electronic cash register to the data collection device may be delayed.

If the storage capacity of the data collection device is not increased, when the relevant time is reached, the operator enters the change code into each electronic cash register by keying in the department code and change unit price from the keyboard of the data collection device. It is possible to do it. However, it is very troublesome for the operator to change the unit price by operating the key each time. In addition, there is a concern that an erroneous operation may occur.

The present invention stores the discount rate and the change time interval of the discount state, and increases the discount amount step by step at each change time interval, so that the selling unit price is maintained at regular intervals without significantly increasing the storage capacity. It is an object of the present invention to provide an electronic cash register which can be automatically changed, the sale unit price of a product can be easily managed, and the operability can be greatly improved.

[Means for Solving Problems] According to the present invention, as shown in FIG. 1, a sales unit price corresponding to a department code of a sales product input through an input device a is read from a unit unit price memory b. In the electronic cash register that executes the sales registration process c for the corresponding product,
A timer d that measures time, a discount rate memory e that stores a discount rate, a change time interval memory f that stores a change time interval indicating a time during which the same discount state continues, and a timer d have finished measuring the change time interval. A change number counter g that counts the number of changes indicating the number of times, and each time the number of changes of the change number counter g changes, a selling unit price is calculated by multiplying the initial unit price by the number of changes and the discount rate. It is provided with a selling unit price changing means h for changing the subtracted unit price.

Another aspect of the present invention is to provide the division ratio of the discount rate memory e, the change time interval of the change time interval memory f, and the change count counted by the change count counter g for each department, and change the change count counter for each department. Each time the number of times of change changes, the sales unit price of the relevant department is changed to a unit price obtained by subtracting the initial unit price minus the amount obtained by multiplying the initial unit price by the number of changes and the discount rate. Is.

Furthermore, in another invention, in addition to the above-mentioned respective means a to h, a change start time memory i for storing the change start time of the selling unit price is provided, and the timer d is set after the change start time by the change number counter g. The number of changes, which indicates the number of times the change time interval has been timed, is counted.

Furthermore, in another invention, in addition to the respective means a to i, a change end time memory j for storing the change end time of the selling unit price is provided, and the change number counter g is used to change after the change start time and end the change. The timer d counts the number of changes indicating the number of times the timer d has finished measuring the change time interval before the time.

Further, in another invention, in addition to the above-mentioned means a to j, a unit price return time memory k for storing a unit price return time at which the selling unit price returns to the original initial unit price, and the selling unit price change when the unit price return time comes. The selling unit price returning means 1 for returning the selling unit price changed by the means f to the original initial unit price.

[Operation] With the electronic cash register configured in this way, the number of changes is incremented each time the timer finishes measuring the change time interval, and the initial unit price is multiplied by the discount rate. It is deducted from the initial unit price and used as the selling unit price. Therefore, the selling unit price is reduced and changed every time the change time interval elapses.

Further, as an effect of another invention, the selling unit price of each department is sequentially reduced by the discount rate set for each department and the set change time interval.

Still another effect of the present invention is that, when the preset change start time comes, the selling unit price is sequentially reduced at the change time intervals.

In addition to the above-described operation, the operation of yet another invention stops the reduction of the selling unit price at the preset change end time.

In addition to the above-described operation, the operation of still another invention is such that, when the preset unit price return time is reached, the selling unit price that has been gradually reduced is restored to the original initial unit price.

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

FIG. 2 is a perspective view showing an electronic cash register of the embodiment, in which a keyboard 2 as an input device is provided on the front surface of the housing 1.
Is provided, and a display unit 3 for electronically displaying the department code, sales amount, total amount, etc. of the sold product is provided at the upper part of the housing 1, and the receipt issuing port 4 and the money are provided at the middle part and the lower part, respectively. A drawer 5 for storing is provided. Further, a customer display unit 6 having the same structure as the display unit 3 is attached to the upper surface of the housing 1. Also, keyboard 2
A mode key 7 for selecting and setting a work mode such as [Registration], [Inspection], [Settlement], [Setting] is provided adjacent to.

On the keyboard 2, a numerical key for inputting numerical data such as sales amount and sales quantity, and a department (DP) showing the classification of goods
In addition to keys for sales registration such as keys, subtotal keys (ST), and deposit / cash total keys for calculating the total amount of money, various function keys such as # key and X key are arranged.

FIG. 3 is a block diagram of an electronic cash register. The CPU (central processing unit) 8 has a built-in arithmetic circuit and the like, performs various arithmetic processing based on the input information from the keyboard 2, and executes each business program via the address bus 9, data bus 10 and control line 11. The ROM 12 that stores fixed data such as the above, and the RAM 13 that stores sales data such as the sales amount of each product key-inputted are operated. In addition, a drawer control circuit 14 for controlling the opening and closing of the drawer 5, a keyboard input circuit 1 for receiving a key signal from the keyboard 2
5, a mode input circuit 16 to which a command signal from the mode key 7 is input, a display control circuit 1 for sending a display signal to the display units 3 and 6
7. A printer control circuit 19 of a dot printer 18 for printing out on a receipt and a journal and a clock circuit 20 for measuring the current time t ₀ are connected to a CPU 8 via a data bus 10 and a control line 11, respectively.

As shown in FIG. 4, a keyboard 2 is provided in the RAM 13.
Numerical value buffer R1, which temporarily stores the numerical data entered by the numeric keypad, and the three flags (ST flag,
#Flag, DP flag), flag area R2, discount rate buffer R3 for temporarily storing the discount rate α keyed from the keyboard 2, change time interval buffer R4 for temporarily storing the change time interval Δt also keyed likewise keyed changes starting time t ₁ and changing the end time t ₂ and the unit price return time t ₃ the change start time buffer temporarily stores each R5
And change end time buffer R6 and unit price recovery time memory R7
Are formed. In addition, a calculation area R for comparing various set times with the current time t ₀ obtained from the clock circuit 20.
8. A print buffer R9 for temporarily storing data to be printed out on receipts and journals and a department unit price memory R10 for storing a sales unit price C for each department code are formed.

The sector unit price memory R10, for each sector from sector 1 to sector N _E, the initial bid A, sales prices C used for the actual sales registration, the discount rate alpha, changing the time interval Delta] t, change start time t ₁ ,
Department setting memory consisting of change end time t ₂ and change count P
A change counter R11 that counts and a timer counter R12 as a timer that counts the time T during which the same discount state continues.

In addition to the above-mentioned memories, the RAM 13 is provided with a totalizer for calculating the total price of the products sold to one customer and a totaling memory for accumulating various sales data.

The CPU 8 is programmed so as to execute various data setting processing for the department unit price memory R10 according to the flow chart of FIG. That is, when the flow chart is started, it is confirmed that the mode key 7 is set to the [setting] mode, and the key input from the keyboard 2 is awaited. When the key is input, the type of the key is checked. If it is a numeric key in P1, the numeric data input by the key is stored in the numeric buffer R1 and the print buffer R9 of the RAM 13 and is displayed on the display unit 3 to wait for the next key input.

If the key input in P2 is the × key, it is determined that the setting operation for the department unit price memory R10 has started, and the value of the number stored in the number buffer R1 is checked. If the value number is [30] in P3, the discount rate / change time interval setting process of FIG. 6 is started.

When the discount rate / change time interval setting process in FIG. 6 is started, the number [30] in the print buffer R9 is printed out on the receipt 21 and the journal as shown in FIG. Clear the number buffer R1. Next, in the state of waiting for key input, when the numeric key is input at P4, the numeric data is stored in the numeric buffer R1 and the print buffer R9, and the display unit 3 is also displayed via the display control circuit 17. Is displayed, and the next key input is awaited again.
If the key signal input at P4 is other than the numeric key, and if it is the subtotal (ST) key at P5, there is a numeric value in the numeric value buffer R1 and the numeric value must be in the range 0 to 99. After confirming, the numerical data is stored in the discount rate buffer R3 of the RAM 13 as the discount rate α. Next, print the discount rate α
Set it in R9 and print out on receipt 21 and journal as shown in FIG. Next, the ST flag of the flag area R2 indicating the end of the discount rate printing is set to 1, and the numeral buffer R1 and the print buffer R9 are cleared. Then, it waits for the next key input.

When the # key is typed at P6, check that the ST flag is set to 1 and that there is a number in the number buffer R1 and that the number is within the range of 1 to 99. . After that, the register number of the register buffer R1 is stored as the change time interval Δt in the change time interval buffer R4, and is also printed out to the receipt 21 and the journal via the print buffer R9. Then, the # flag indicating that the change time interval has been printed is set to 1, the number buffer R1 and the print buffer R9 are cleared, and the next key input is awaited.

When the department (DP) key is keyed in on P7, the # flag is set to 1 and after confirming that no number data is stored in the number buffer R1, the key entered Print the department code DP on receipt 21, journal. Next, the discount rate α and the change time interval Δt which are temporarily stored in the discount rate buffer R3, the change time interval buffer R4 are stored in the respective areas of the department setting memory of the corresponding department of the department unit price memory R10. Next, after setting the DP flag indicating that the storage in the department setting memory on the discount rate and the change time interval is completed to 1, the number buffer R1, the discount rate buffer R3, and the change time interval buffer R4 are cleared.

In P8, when the deposit / cash total key is keyed in, the DP flag is set to 1, and if it is confirmed that no register is stored in the register buffer R1, the discount rate and change time for all department codes When it is determined that the interval setting process has been completed, a receipt 21 is issued, each flag is cleared to 0, and the number buffer R1 and print buffer R9 are cleared.

In P9 of FIG. 5, if the number data of the number buffer R1 is [31], the change start time setting processing task of FIG. 7 is started.

When the processing for setting the change start time in FIG. 7 is started,
As shown in FIG. 12, print the receipt buffer R9 [3
After printing the number 1], clear the number buffer R1 and print buffer R9, and wait for key input. When the numeral key is keyed in at P10, the inputted numeral data is stored in the numeral buffer R1 and the print buffer R9 and displayed on the display unit 3.

If the key entered in P11 is the # key, confirm that there is a number from 0 to 9999 in the number buffer R1.
The number is the hour. The change start time t ₁ displayed in minutes is stored in the change start time buffer R5. Then, as shown in FIG. 12, the change start time t ₁ of the print buffer R9 is set to the receipt 21
And print it on the journal. Then, after setting the # flag to 1, the number buffer R1 and the print buffer R9 are cleared and the next key input is awaited.

When one department (DP) key is pressed on P12, #
After confirming that the flag is set to 1 and the number is not stored in the number buffer R1, the department code DP is printed on the receipt 21 and the journal as shown in FIG. Then stores the change start time t ₁ of the change start time buffer R5 in the corresponding area of the sector setting memory of the relevant department code departmental bids memory R10. After that, the DP flag is set to 1 and the change start time t ₁ of the change start time buffer R5 is cleared.

When the deposit / cash total key is pressed in P13, it is determined that the setting process of the change start time t ₁ for all department codes has ended, and the DP flag is set to 1 After confirming that the buffer R1 does not store the number, the receipt 21 is issued. Then, each flag is cleared to 0, and the numeral buffer R1 and the print buffer R9 are cleared.

The number data in the number buffer R1 is [32] at P14 in Fig. 5.
If so, the processing for setting the change end time shown in FIG. 8 is started.

When the processing for setting the change end time in FIG. 8 is started,
As shown in FIG. 13, print the receipt buffer R9 [3
After printing the number 2], clear the number buffer R1 and print buffer R9, and wait for key input. When the numeric key is keyed in at P15, the inputted numeric data is stored in the numeric buffer R1 and the print buffer R9 and displayed on the display unit 3.

If the key entered in P16 is the # key, confirm that there is a number from 0 to 9999 in the number buffer R1.
The number is the hour. The change end time t ₂ displayed in minutes is stored in the change end time buffer R6. Then, as shown in FIG. 13, the change end time t ₂ of the print buffer R9 is set to the receipt 21
And print it on the journal. Then, after setting the # flag to 1, the number buffer R1 and the print buffer R9 are cleared and the next key input is awaited.

When one department (DP) key is entered on P17, #
After the flag is set to 1 and it is confirmed that the register number is not stored in the register buffer R1, the department code DP is printed on the receipt 21 and the journal as shown in FIG. Next, the change end time t ₂ of the change end time buffer R6 is stored in the corresponding area of the department setting memory of the corresponding department code of the department unit price memory R10. Then, set the DP flag to 1, to clear the change end time t ₂ of the change the end time buffer R6.

When the deposit / cash total key is pressed on P18, it is determined that the setting process of the change end time t ₂ for all department codes has ended, and the DP flag is set to 1 After confirming that the buffer R1 does not store the number, the receipt 21 is issued. Then, each flag is cleared to 0, and the numeral buffer R1 and the print buffer R9 are cleared.

In P19 of FIG. 5, if the number data of the number buffer R1 is [33], the unit price recovery time setting processing task of FIG. 9 is started.

When the unit price recovery time setting process of FIG.
As shown in the figure, after printing the number [33] of the print buffer R9 on the receipt 21, the numeral buffer R1 and the print buffer R9 are cleared, and the key input is waited. When the numeral key is keyed in at P20, the inputted numeral data is stored in the numeral buffer R1 and the print buffer R9 and displayed on the display unit 3.

If the key entered in P21 is the deposit / cash total key, confirm that there is a register number from 0 to 9999 in the register buffer R1, and then enter that number. Stored as bid return time t ₃ when displayed in minutes to bid return time memory R7. Then, as shown in FIG. 14, the unit price recovery time t ₃ of the print buffer R9 is printed on the receipt 21 and the journal. And receipt 21
Is issued to clear the unit number buffer R1 and the print buffer R9, and the unit price recovery time setting processing operation is completed.

With the above, each discount rate α for each department code of each department code of each department code R10 of RAM13, each change time interval Δt,
The setting work for each change start time t ₁ and each change end time t _{2 and} the setting work for the unit price return time t ₃ for the unit price return time memory R7 are completed.

The initial unit price A of each department in the department unit price memory R10 is set by a normal setting method. Then, at the same time as the initial unit price A is set, the selling unit price C is set to the initial unit price A.

In such a state, when the mode key 7 is set to the [registration] mode and normal sales registration work is being executed,
When the department key of the sale item is input from the keyboard 2, the sale item sale registration process is executed with the sale unit price C of the relevant section code in the unit unit price memory R10.

Then, the processing for changing the reduction of the sales unit price C of each department is executed by the timer interruption processing in response to the interruption signal for every minute shown in FIG.

That is, in FIG. 10, when the timer interrupt process is started, the current time t ₀ is read from the clock circuit 20. Then set the department code N indicating the read pointer of the department code from one sector unit price memory R10 to N _E to the initial value 1. next
Change start time t of the department setting memory for department code N on P22
Read _1N . If the current time t ₀ matches the change start time t _1N in P23, the change count P _N of the change counter R11 is set to the initial value 1
After setting to, calculate the discount amount B _N shown in the following formula on P24.

B _N = A _N P _N α _{N When the} discount amount B _N is obtained, the actual sales unit price C _N is calculated using the following formula.

C _N = A _N −B _N And the calculated sales unit price C _N is the new sales unit price C _N
As the sales unit price area. After that, the timer counter R12 of the relevant department code is reset (started) ( _TN =
0). Next, the count value T _N of the timer counter R12 is incremented by 1 at P25, and the department code N is incremented by 1 at P26. When it is confirmed on P27 that the increased department code N does not exceed the final department code N _E , P2
Return to 2 and read the change start time t _1N of the department code N after the increase.

Then, make sure that the current time t ₀ at P28 not in the unit price return time t ₃ or more of the unit price return time memory R7 in the case where the current time t ₀ at P23 does not match the change start time t _1N Then, at P29, it is confirmed that the current time t ₀ does not exceed the change end time t _2N of the relevant department code N. Then P30
Count value T _N of the timer counter R12 of the corresponding department code N if matching the changed time interval Delta] t _N, it is determined that the same discount state continues for a change time interval Delta] t at. And
The number of changes P _N of the number-of-changes counter R11 is incremented by 1, and the process proceeds to P24 described above to start the sales unit price change process for the relevant department code. That is, the discount amount B _N of the relevant department code is calculated using the increased number of changes P _N.

If the count value T _N of the timer counter R12 has not reached the change time interval Δt _N at P30, the process directly proceeds to P25 and increments the count value T _N of the timer counter R12 by 1.

Further, if the current time t ₀ exceeds the change end time t ₂ in P29, the selling unit price of the relevant department code is not changed, so the process proceeds to P26 and increments the department code N by 1.

Further, when the current time t ₀ becomes more than the unit price recovery time t ₃ of the unit price recovery time memory R7 in P28, the corresponding department code N
The selling unit price C _{N of} is returned to the initial unit price A _N. And P26
And the department code N is incremented by 1.

In the electronic cash register configured as described above, for example, as shown in each receipt 21 of FIG. 11 to FIG. 14 for the goods of the department 1, the discount rate α = 5%, the change time interval Δt = 30 minutes, Change start time t ₁ = 10:00, change end time t ₂
The following describes the flow of sales unit price changes when = 14: 00 and unit price recovery time t ₃ = 17: 00 (common to all departments). First, if the initial unit price A of department 1 is set to 1000 yen, then the selling unit price C is also set to 1000 yen. When the change start time t ₁ = 10:00, the initial unit price A = 1000 yen and the discount rate α =
The discount amount B = 50 yen multiplied by 5% is deducted from the initial unit price of 1000 yen, and the selling unit price C becomes 950 yen. When the change time interval Δt = 30 minutes elapses, that is, at 10:30, the sales unit price C is changed to 900 yen by subtracting 50 yen from the sales unit price 950 yen that has been changed again. In this way, the selling unit price C is reduced by 50 yen each time 30 minutes elapses until the change end time t ₂ = 14: 00. Then, when the change end time t ₂ = 14: 00, the final unit price change is performed. In this case, the unit sales price C of the department 1 is finally 550 yen. Then, the selling unit price until the unit price recovery time t ₃ = 17: 00
It remains at 550 yen.

At 17:00, the initial unit price A = 1000 yen is read and this initial unit price 1000 yen is set as the selling unit price C. That is, if the unit price recovery time t ₃ is set to the closing time, the selling unit price C of each department is automatically returned to the initial unit price A at the opening of the next day.

By setting the discount rate α, the change time interval Δt and the initial unit price A in this way, the actual sales unit price C is automatically and sequentially stepwise from the initial unit price A each time the change time interval Δt elapses. It is possible to discount. Therefore,
Since the operator does not perform any unit price changing operation, the extra work involved in changing the unit price can be omitted, and the work efficiency of sales operations can be greatly improved. In particular, in the case where there are many departments that change the selling unit price, it is difficult to change the unit price by manual operation one by one. Therefore, according to the present invention, all of them are automatically executed, which is very convenient.

Further, since the selling unit price C automatically changes at a constant change time interval Δt, human error such as forgetting to change can be suppressed to a minimum.

Furthermore, if at least the discount rate and the change time interval are stored in the storage unit, the selling unit price is automatically reduced and changed, so the storage capacity of the storage unit is greatly reduced compared to the conventional device. it can.

Further, since the discount rate α and the change time interval Δt can be set for each department, the most effective discount rate α and the change time interval Δt in the sales strategy can be set for each product department.

Further, since the change start time t ₁ indicating the start of discounting the selling unit price C can be arbitrarily set, the unit price change can be started from the optimum time for each department according to the degree of freshness of fresh food or the like.

Further, by performing the setting of the change end time t _2, the After lowering the sales price C up to a certain unit price, where to end the reduction bid changes, since it is possible to maintain a constant unit price, sales prices C Can be prevented from falling too low.

Further, by performing the setting of the bid return time t _3, by setting the unit price return time t ₃ to closing time, since the next day the sales unit price C of each division automatically returns all initial bid A, opening It is not necessary to perform the operation of returning the selling unit price C to the original initial unit price A before the time. Therefore, the work efficiency of the preparatory work when the store is opened can be significantly improved.

[Effects of the Invention] As described above, according to the electronic cash register of the present invention, the discount rate and the change time interval of the discount state are stored,
The discount amount is increased stepwise as the change time interval elapses. Therefore, without significantly increasing the storage capacity,
The selling unit price can be automatically changed at regular intervals, the selling unit price of products can be easily managed, the operability can be greatly improved, and the work efficiency of the entire sales operation can be greatly improved.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing the configuration of the present invention, FIGS. 2 to 14 show an electronic cash register according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the whole.
FIG. 3 is a block diagram, FIG. 4 is a diagram showing a main memory of a storage unit, FIGS. 5 to 10 are flow charts showing an operation, and FIG.
FIG. 14 to FIG. 14 are views showing the print format of the receipt. 1 ... Housing, 2 ... Keyboard, 3,6 ... Display, 7 ...
… Mode key, 8 …… CPU, 13 …… RAM, 20 …… Clock circuit, 21 …… Receipt, R10 …… Unit price memory, R11
…… Change counter, R12 …… Timer counter, A…
… Initial unit price, C …… Sales unit price, α …… Discount rate, Δt ……
Change time interval, t ₁ …… Change start time, t ₂ …… Change end time, t ₃ …… Unit price recovery time.

Claims (5)

[Claims] 1. A timer for measuring time in an electronic cash register, which reads a sales unit price corresponding to a department code of a sales product input from an input device from a unit unit price memory and executes a sales registration process for the product. When,
A discount rate memory that stores a discount rate, a change time interval memory that stores a change time interval indicating a time during which the same discount state continues, and a change count that indicates the number of times the timer has timed the change time interval. The change counter and each time the change count of this change counter changes,
An electronic cash register, comprising: a selling unit price changing means for changing the selling unit price from an initial unit price to a unit price obtained by subtracting an amount obtained by multiplying the initial unit price by the number of changes and the discount rate. 2. A timer for measuring time in an electronic cash register, which reads a sales unit price corresponding to a department code of a sales product input from an input device from a unit price memory for each department and executes a sales registration process for the product. When,
A discount rate memory that stores a discount rate for each department, a change time interval memory that stores a change time interval that indicates the time when the same discount state continues for each department, and the timer for each department that finishes timing the change time interval. The change counter that counts the number of changes, and each time the number of changes in the change counter changes for each department, the sales unit price of the department is changed from the initial unit price to this initial unit price and the discount is discounted. An electronic cash register, comprising: a selling unit price changing means for changing a unit price obtained by subtracting an amount obtained by multiplying a rate. 3. A timer for counting time in an electronic cash register which reads out a sales unit price corresponding to a department code of a sales product input from an input device from a unit unit price memory and executes a sales registration process for the product. When,
A discount rate memory that stores a discount rate, a change time interval memory that stores a change time interval that indicates the time when the same discount state continues, a change start time memory that stores the change start time of the selling unit price, and the change start A change counter that counts the number of changes indicating the number of times the timer has timed the change time interval after the time, and the sale unit price is changed from the initial unit price to the initial unit price each time the change count of the change counter changes. An electronic cash register, comprising: a selling unit price changing unit for changing a unit price to a unit price obtained by subtracting an amount obtained by multiplying the unit price by the number of changes and the discount rate. 4. A timer for measuring time in an electronic cash register for reading out a sales unit price corresponding to a department code of a sales product input from an input device from a unit unit price memory and executing a sales registration process for the product. When,
A discount rate memory for storing a discount rate, a change time interval memory for storing a change time interval indicating a time during which the same discount state continues, a change start time memory for storing a change start time of the selling unit price, and the selling unit price. A change end time memory for storing the change end time, and a change number counter for counting the number of changes indicating the number of times the timer has timed the change time interval after the change start time and before the change end time, Each time the number of changes in the number-of-changes counter changes, the selling unit price is changed to a unit price obtained by subtracting the initial unit price from the initial unit price minus the amount obtained by multiplying the number of changes and the discount rate. An electronic cash register characterized in that 5. A timer for measuring time in an electronic cash register for reading a sales unit price corresponding to a department code of a sales product input from an input device from a unit price memory for each department and executing a sales registration process for the product. When,
A discount rate memory for storing a discount rate, a change time interval memory for storing a change time interval indicating a time during which the same discount state continues, a change start time memory for storing a change start time of the selling unit price, and the selling unit price. The change end time memory that stores the change end time of the, the unit price return time memory that stores the unit price return time at which the selling unit price returns to the original initial unit price, and the timer after the change start time and before the change end time. A change counter that counts the number of changes indicating the number of times the change time interval has been timed, and each time the number of changes of the change counter changes, the selling unit price is changed from the initial unit price to the initial unit price by the number of changes. Sales unit price changing means for changing the unit price by subtracting the amount multiplied by the discount rate,
An electronic cash register, comprising: a selling unit price returning unit for returning the selling unit price changed by the selling unit price changing unit to the original initial unit price when the unit price returning time comes.