JPS5824823B2 - electronic cash register - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic cash register, and more particularly to an electronic cash register capable of converting different types of currencies.

Generally, electronic cash registers (hereinafter referred to as ECRs) are in practical use at various specialty stores.

By the way, like hotel shops and shops near airports,
At stores frequently used by foreigners, the payment for sold products may be paid not only in the domestic currency but also in the foreign currency.

In such cases, conventionally, the products purchased by a foreigner are registered individually, the total is processed, the total amount is converted into the currency that the foreigner pays using a calculator, etc., and the payment is processed based on the converted amount. Was.

However, it is rare for a foreigner to pay the foreign currency equivalent of the purchase price in the currency that the foreigner owns, and change is often required.

In that case, the change may be calculated in a foreign currency and the change given in that foreign currency, or the change amount may be converted into the home currency and the change given in the home currency.

As described above, in the past, when conducting transactions with different types of currencies, calculations had to be performed using separate calculators, and the calculations were extremely complex, making it easy to make calculation errors.

Therefore, it is an object of the present invention to provide an ECR that is capable of converting different types of currencies, is easy to operate, and can prevent calculation errors.

To summarize this invention, the unit price of the purchased products of a foreign customer is registered in his or her home currency and the total price is calculated.

When the total amount is to be settled in a foreign currency, the total amount is converted into the foreign currency and displayed based on the first rate of the foreign currency relative to the home currency.

Then, when the customer pays in foreign currency more than the converted total amount, the customer enters the deposit amount, and then converts the deposit amount to the home currency based on a second rate of the home currency against the foreign currency, Change is dynamically calculated and displayed from the total amount and the deposited amount.

Specific embodiments of the present invention will be described below with reference to the drawings.

FIG. 11 is a block diagram of an embodiment of the present invention.

In the configuration, the CPU 10, which is an example of the arithmetic processing means, includes:
A program storage memory (hereinafter referred to as ROM) 11 that stores a program shown in FIG.
, (described in detail in FIG. 3 below) 30, and the second
A keyboard 20 shown in the figure, a display 12 including a numeric display section, a department display section, and various other function display sections, a printer 13, a cash drawer 14, and a buzzer 1
5 is connected.

FIG. 2 is a specific illustration of the keyboard 20.

In the figure, on the operation panel of the keyboard 20 there is an EC
A key cylinder switch (hereinafter simply referred to as a key cylinder) 21 for selecting the operation mode of H, numeric keys 22 for inputting numerical information manually, a group of department keys 23 including department keys 231 to 234, a function key 24, Payment will be processed in the currency of

An FC key 25, which is operated when the computer is in use, is provided.

This key cylinder 21 is used to stop the operation of the ECH.
FF position, P position to select setting mode, REG position to select registration mode, X position to select payment mode performed by operator operation, and payment mode where only a specific administrator can perform payment operations. and a Z position to select the
The operation mode of the ECR is selectively switched depending on the switching position of the key cylinder.

The function keys 24 include a cash key (CA in the illustration) 241 that is pressed when making a cash payment, a subtotal key (ST) 242 that is used to issue a total calculation command after registering each item purchased by the customer, and a subtotal key (ST) 242 that is used to issue a total calculation command when making a payment. It also includes a deposit key (MD) 243 for inputting the deposit amount deposited from the customer.

FIG. 3 is a diagram schematically showing the storage area of the RAM.

In the figure, the RAM 30 stores a flag Ffc for storing that the FC key 25 has been pressed, and a flag Ffc for storing that the FC key 25 has been pressed, and
A register Wnm that stores numerical information input by operating the register Wnm, and a register that stores the first rate of foreign currency against the home currency or stores the amount of foreign currency converted from the registered amount based on rate 1. Wfc, a subtotal register Wst for storing total amount information, a register Wtn, and a department total register provided corresponding to each of the department keys 23 and storing the total amount for each department of purchased products. It includes DRI to DR4, a register Wdm for storing intermediate totals, and various other storage areas.

FIG. 4 is a flowchart for explaining the operation of one embodiment of the present invention.

FIG. 5 is a diagram schematically showing the key operations, display state, and printing state of an example of the operation of the present invention, and in particular, a is an example in which the home currency is Japanese yen and the foreign currency is the dollar. , and b indicates the case where the home currency is the German mark (hereinafter abbreviated as DM) and the foreign currency is the dollar.

Next, with reference to FIGS. 1 to 5a, an example will be described in which a product denominated in yen is purchased at a store in Japan and the payment is made in dollars.

For example, if 1 dollar is 200 yen, 1 dollar is 1o
To display in units of oo, the first rate (hereinafter referred to as rate 1) of the foreign currency relative to the home currency is expressed by equation (1).

Rate 1=1000÷200=5.000...(
1) On the other hand, in order to display 1 dollar in units of 0.001 G (3 digits below the decimal point), rate 1 is expressed by equation (1) 2.

Rate 1÷200=0.005...(1)
'Now, if rate 1 is 5.000, the second rate of home currency against foreign currency (hereinafter referred to as rate 2) is
) is expressed by the formula.

Rate 2=1000÷5.000=200...(
2) On the other hand, if rate 1 is 0.005, rate 2 is expressed by equation 2'.

Rate 2=1000÷0.005=200000
...(2)'By the way, rate 1 and rate 2
When determining , it is safe to take into account that the display is easy to read and that there are few errors due to rounding when converting based on the rate, so if the digits of one rate are significantly different from the other, such Since the condition is not satisfied, in the following explanation, rate 1 is set to r5.000J shown in equation (1), and rate 2 is set to r2 shown in equation (2).
Described as 00J.

Normally, the conversion rate changes every day, so before using ECH, the values of rate 1 and rate 2 for that day are calculated in advance based on equations (1) and (2) above.

For example, the following explanation assumes that a foreign customer purchases one item of the first item with department code 1 for a unit price of 200 yen, and also purchases one item of the second item of department code 2 for a unit price of 400 yen. .

The operator first operates the numerical keys 22 to input the unit price of 200 yen for the first product.

In response to this, the CPU determines that any key is available and selects a numeric key.

, and inputs the single item amount r200J input by operating the numerical key 22 to the number register Wnm,
The single item price “2” stored in the corresponding number register Wnm
00'' yen is displayed on the numerical display section included in the display 12.

Subsequently, the operator presses the department key 231 which specifies that the department code of the first product entered earlier is "1".

In response to this depression of the department key 231, the CPU 10 determines that one of the keys has human power and is a department key, not a numeric key, and has just been pressed.

The department code "1" of the department key 231 is displayed on the department display section included in the display 12, and then the department code "1" is displayed.
and the single item price r200J are given to the printer 13 to be printed and recorded.

After that, the CPUI O registers the subtotal register Ws
Add the contents stored in t (initially 0) and the contents stored in numeric register Wnm to obtain the subtotal amount of the single item registration amount, and updately store the subtotal amount in register Wst. In addition, the contents of the department total register DRI corresponding to the department key 231 and the number register Wnm
4 is added to obtain a new total amount for department code "1", and after updating the new cumulative amount for each department in the department total register DRI, proceed to the key human power standby operation described above. return.

Furthermore, the operator operates the numerical keys 22 to input the unit price of the second product, r400J yen, and then presses the department key 242 to input the department code "2" for the second product.

In response to this, the CPUI O performs the same operation as described above and inputs the single item amount r40 input by operating the numerical value key 23.
By storing 0J in the number register Wnm, it is displayed on the display 12. Furthermore, the department code "2" input by operating the department key 242 is displayed, and the department code "2" and the single item price "400" are displayed. 9 The printer 13 prints and records the subtotal amount (200 + 4
00=600) is stored in the register Wst, and the contents stored in the department register DR2 corresponding to department code "2" 1 and the contents stored in the numeric register Wnm are added to obtain the corresponding department code. Find the cumulative amount,
The cumulative amount is updated and stored in the register DR2.

) Next, the operator presses the subtotal key 421.

In response to this, the CPU I O determines that any key is available and is not a numeric key, not a department key, not an FC key, and is the subtotal key 242.

Furthermore, the CPUI O determines whether or not logic "1" is written in the flag Ffc, but the first subtotal key 2
Since logic "0" is stored when 42 is operated, the subtotal amount information stored in the register Wst is given to the display 12 and displayed.

Further, the operator operates the numerical key 22 to select the value r5 of rate 1. Enter ooOJ.

This rate 1 value r5. ooOJ is the number register W
nm and is displayed on the display 12.

Subsequently, the operator presses the FC key 25.

In response, the CPU I O determines that any key is available, is not a numeric key, is not a department key, and is the FC key 25, and reads the numeric information stored in the numeric register Wnm (i.e., the ) 1 = 5.000)
is transferred to register Wfc and stored, flag Ffc
After writing logic "1" to the key, the key returns to manual standby operation.

Continuing further, the operator presses the /''1 total key 242.

In response to this, the CPU 10 determines that one of the keys has power, is not a numeric key, is not a department key, is not FC, and is the subtotal key 242, and sets the flag Ffc to the logic "
1" is written, and converts the total purchase amount (600 yen) by the customer into dollars.

That is, the subtotal amount stored in register Wst is multiplied by the first rate stored in register Wfc, and then divided by 1000 (600X5.OOO÷
1000=3.000) and the total amount purchased by the customer (
600 yen) to dollars (3 dollars), and convert the converted amount (
3,000 dollars) is stored in the register Wfc, and the converted amount (3,000 dollars) stored in the register Wfc is stored in the register Wfc.
) and a symbol (for example, FC) representing the converted amount are displayed on the display 12, and after resetting the flag rfc (ie, writing logic "0"), the process returns to the key manual standby operation.

In this way, the total amount of the products purchased by the customer is converted into the customer's currency (dollars), and the converted amount is displayed.

After seeing the converted amount as described above, the customer pays an amount ($3) commensurate with the converted amount in dollars.

The operator receives the payment amount of $3. Numeric key 2
After inputting the deposit amount r3,000 J dollars by operating 2, the user presses the FC key 25.

In response, the CPUI O stores the deposit amount (3,000) in the number register Wn in the same way as the numerical information input operation described above.
m, displays it on the display 12, transfers the deposited amount stored in the numeric register Wnm to the register Wfc and stores it, and sets the flag rfc to logic "
After writing "1", the key returns to manual standby operation.

Next, the operator operates the numeric key 22 to input the second rate (200), and then presses the tilt key 243.

In response, the CPU 10° operates the numeric key 22 to store the input rate 2 (=200) in the number register Wnm and displays it on the display 12.

Further, when the CPU 10 determines that the deposit key 243 has been pressed, it determines that the flag Ffc is logical "l".

Then, the following payment processing and change calculation processing are performed.

That is, the CPU 10 multiplies the deposit amount (3 dollars) stored in the register Wfc by the second rate (200) stored in the register Wnm (3X2
00=600) L, converts the deposited amount into the currency of the home country and stores the converted amount in register Wtn.

Then, the CPUI O determines whether the converted amount (600 yen) of the deposited amount (3 dollars) stored in the register Wtn is greater than or equal to the subtotal (600 yen) of the purchased products stored in the register Wst. In this case, since both ministries are equal, the IJ/total amount stored in the register Wst is printed and recorded on the printer 13, and based on the flag rfc, it is determined that the payment was processed in foreign currency. Symbol rFcJ and register Wf
Deposit amount in dollar currency stored in c “3.
000" is printed and recorded on the printer 13, and then the second rate "200" stored in the numeric register Wnm is printed.
" is printed and recorded on the printer 13, and then the register Wt
A signal rMEDIAJ representing the converted amount r600J of the deposit amount stored in n converted into Japanese yen and the converted amount
The printer 13 prints and records the register Wtn.
Subtract the subtotal amount stored in the register Ws t from the converted dollar amount stored in the dollar amount (600-600=0) and insert the change into the change display symbol rCHANGBJ, :! : Print and record the amount (O in this case) on the printer 13, display the change on the display 12, write logic "0" to the flag rfc, clear the register Ws t, and then end the series of operations. do.

In this way, when a single item whose price is displayed in Japanese yen is purchased, the registration process is performed in Japanese yen, and when the customer pays in dollars, an example of a foreign currency, the first rate and second rate are used. Payment can be processed in dollars and change can be calculated.

If the deposited amount is less than the subtotal amount, the process returns to the key manual standby operation and waits until the deposited amount exceeding the subtotal amount is delivered.

In the above-described embodiment, the case where the domestic currency is the Japanese yen and the foreign currency is the dollar is explained, but the technical idea of the present invention can be similarly applied to various other foreign currencies.

Therefore, with reference to FIG. 5, the registration operation and its operation when the home currency is the German mark and the foreign currency is the dollar will be briefly explained.

For example, if 1 dollar is equivalent to 2.30 German Marks (DM), the first rate is 4.348 and the second rate is 230.

If the unit price of the product purchased by the customer is 0.50 DM and the department code of the product is "IJ," the operator operates the numeric keys 22 to input the unit price (0, 50) and presses the department key 231. Press.

Accordingly, the department code Fl” and the unit price (0,50
DM) is displayed on the display 12 and printed and recorded by the printer 13.

Then, when the operator presses the subtotal key 242, the subtotal amount (0.50DM) is displayed on the display 12.

After that, the operator operates the number ukigyu-22 to rate 1 (4
, 348), press the FC key 25, and press the subtotal key 242.

Accordingly, the CPU multiplies the subtotal amount (0,50DM) by rate 1 (=4.348) (0,5X4.348÷
10=0.217) to obtain the amount converted into German marks, and display it on the display 12.

Then, when the customer pays 22 cents (i.e. $0.22), the operator operates the numerical keys 22 to calculate the payment amount (
After inputting 0.22 dollars) and pressing FC key 25,
Operate the numeric key 22 to input 2 (=230), and press the deposit key 243.

As a result, CPUI O calculates the change and displays the change on display 1.
2, and the printer 13 prints and records the subtotal amount, the deposited amount, the rate 2, the amount obtained by converting the deposited amount into German marks, and the amount of change in German marks, respectively, in the same manner as described above.

It will be understood that in this way, even if the home currency is the German mark and the foreign currency is the dollar, the payment processing and change calculation processing can be accomplished in the same way.

In the above-mentioned embodiment, the conversion command is issued by inputting the value of rate 1 using the numerical keys 22 as the first conversion command means and operating the FC key 25, and the conversion command is issued using the numerical keys 22 as the second conversion command means. Although the case where the conversion command is issued by inputting the value of rate 2 and operating the deposit key 243 has been described, various other means are possible.

ν, using the storage area consisting of RAM 30, the BCR
Before the first registration operation, rate 1 and rate 2 of the day
The values of rate 1 and rate 2 entered manually using the numerical keys 23 are written and stored in the storage area of the RAM 30.

Then, if a specific key is provided to read and command the values of rate 1 and rate 2, and when the specific key is operated, the stored rate 1 or rate 2 is read out and the conversion process in the above operation is performed. good.

According to this invention, the foreign currency rate based on the domestic currency;
Alternatively, since a means is provided for inputting the rate of the home currency based on the foreign currency and instructing the conversion process to one of the currencies, an effect can be obtained that the conversion process can be performed efficiently when converting the amount.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention. FIG. 2 is an illustrative diagram of the keyboard 20. Figure 3 is RA
FIG. 3 is a diagram schematically showing a storage area of M30. FIG. 4 is a flowchart for explaining the operation of one embodiment of the present invention. FIG. 5 is a diagram schematically showing key operations, display states, and printing states of an example of the operation of the present invention. In the figure, 10 is a CPU, which is an example of arithmetic processing means;
is a ROM, 12 is a display, 13 is a printer, 14 is a cash drawer, 15 is a buzzer, 20 is a keyboard, 21
is a key cylinder, 22 is a numerical key, 23 is a group of department keys,
24 is a function key, 241 is a cash key, 242
is the subtotal key, 243 is the deposit key, 25 is the FC key, 30
indicates RAM.

Claims (1)

[Scope of Claims] 1. An electronic cash register used when settling an amount registered in one's own country's currency in a foreign currency, comprising a numerical information input means for inputting numerical information, and a means for inputting numerical information; a display means for displaying other numerical information; a first conversion command means for instructing conversion of the amount in the currency of the home country entered by the numerical information input means into an amount in a foreign currency; and input by the numerical information input means. a second conversion command means for instructing the conversion of the foreign currency amount to the home currency amount; convert the home currency amount into a foreign currency amount at the foreign currency rate, and calculate the foreign currency amount into the home currency amount at the home currency rate against the foreign currency in accordance with the command from the second conversion command means; 1. An electronic cash register comprising: calculation side dividing means for converting the amount and displaying the amount on the display means. 2. The first conversion command means inputs the numerical information input by the numerical information input means by operating a key that specifies the first rate, and the second conversion command means inputs the numerical information input by the numerical information input means. 2. The electronic cash register according to claim 1, wherein the numerical information inputted by the operator is inputted by operating a key specifying the second rate. 3. The first conversion means includes a first storage means for presetting and storing a first rate, and a key for reading and commanding the first rate stored in the first storage means, and the second The conversion command means comprises a second storage means for setting and storing a second rate in advance, and a key for reading and commanding the second rate stored in the second storage means. Electronic cash register as described in section.