JP2851345B2 - Sales data processing equipment - Google Patents

Description

The present invention relates to a sales data processing device such as an electronic cash register, a POS register, and an electronic balance for face-to-face sales. The present invention relates to a sales data processing device configured to be changeable.

[Prior Art] In a conventional electronic cash register, each key is arranged in a matrix, and various functions are fixedly assigned to each key.

However, such an electronic cash register may be very inconvenient in operation depending on the working environment and the operator. For example, there are two types of operators, right-handed and left-handed. In the fixed key layout, the key functions are conveniently arranged for the right-handed operator to operate, which is extremely inconvenient for left-handed operators. Met. A right-handed operator is forced to perform the operation with patience and has a drawback that the working efficiency is reduced.

Also, with a fixed key arrangement, the keyboard pattern is uniform and there is no room for the taste of the operator. Therefore, even if it is more efficient to change and use it according to the taste of the operator, it cannot be done, which is inconvenient.

To solve these disadvantages, the following electronic cash register has been considered.

In other words, there is a type in which a user can freely set the allocation of functions to each key arranged in a matrix by operating each key of the keyboard, and obtain a desired keyboard pattern ( See JP-A-59-55568).

In this case, since the operator must perform the function setting for each key of the keyboard one by one, it takes much time to set the function. Therefore, when operators having different operation characteristics frequently use the same, for example,
In the case where a right-handed operator is used in the morning and a left-handed operator is used in the afternoon, the setting work must be performed each time the operator switches, which is not practical.

To solve this drawback, the following electronic cash register has been considered.

That is, by storing a plurality of key arrangements in which predetermined functions are assigned to each key of the keyboard as a keyboard pattern, assigning an identification number to each keyboard pattern to distinguish them, and inputting this identification number There is an apparatus in which a desired keyboard pattern is selected, called, and used (see Japanese Patent Application Laid-Open No. 63-8991).

By entering a specific identification number,
It is possible to easily and quickly allocate functions to each key of the keyboard, and it is possible to easily obtain a desired keyboard pattern.

[Problem to be Solved by the Invention] However, in such a conventional electronic cash register, a specific identification number is input to select a desired keyboard pattern. .

That is, since the operation of inputting the identification number is an operation that has not been performed so far, there is a drawback that the operator who is used to the normal operation feels that the input operation is very troublesome.

Further, if this input operation is forgotten, the keyboard pattern is different from the desired one.

Further, it is necessary for the operator to store the number corresponding to the keyboard pattern desired by the operator, and if an incorrect number is entered, the operator will make a key operation error as described above. There are drawbacks.

Further, in the related art, there is a disadvantage that any of the prepared keyboard patterns can be selected and used only by inputting a recognition number for selecting a keyboard pattern. Here, an electronic cash register is often operated by an amateur such as a part-time worker or a part-time worker. Therefore, if any keyboard pattern can be selected and used, extra keys other than the keys used for normal operation (especially important keys to which tasks such as counting and unit price change are assigned) may be operated. It has the disadvantage that it can cause business confusion.

The present invention has been made in view of the above circumstances, and it is possible to obtain a keyboard pattern suitable for each operator without performing extra operations, thereby preventing key operation errors and business confusion. It is an object of the present invention to provide a sales data processing device capable of performing the above.

[Means for Solving the Problems] A first sales data processing device of the present invention is a sales data processing device provided with a keyboard in which keys are arranged in a matrix, wherein a plurality of functions are assigned to the keys. Storage means for storing a keyboard pattern of the operator, code input means for inputting an operator code assigned to the operator, and a specific keyboard pattern from the storage means based on the operator code input from the code input means. And calling means for selecting and calling.

Further, a second sales data processing device of the present invention is a sales data processing device provided with a keyboard in which keys are arranged in a matrix, and stores a plurality of keyboard patterns in which functions are assigned to the keys. Means, code input means for inputting an operator code assigned to the operator, and calling means for selecting and calling a specific keyboard pattern from the storage means based on the operator code input from the code input means. Display changing means for changing a display on the keyboard in accordance with the keyboard pattern called by the calling means.

[Operation] In the present invention, when the operator code is input, a desired keyboard pattern is automatically selected by the operator from the storage unit based on the operator code. In this type of apparatus, inputting the operator code prior to use is an essential operation from the viewpoint of, for example, totaling transaction data for each operator and printing a processing operator on a receipt. Therefore, the operator can automatically obtain a desired keyboard pattern without performing an extra operation, thereby preventing a key operation error.

Further, since the keyboard pattern is selected according to the operator, for example, it is possible to limit the keys that can be operated according to each operator. Therefore, it is possible to prevent the operator from inadvertently operating extra keys and causing confusion in the business.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an external structure of an electronic cash register according to an embodiment of the present invention, and FIG. 2 is a block diagram showing an electric configuration thereof.

1 is a keyboard, this keyboard 1 is "subtotal"
Function key 1a consisting of various keys such as a key and a "current total" key, and a numeric keypad 1b for entering the amount and quantity of goods
And a preset key 1c for calling product information (product name, unit price, etc.) preset for each product. Reference numeral 2 denotes a reading window for the bar code reader 3 shown in FIG. 2, and the bar code is automatically scanned and read by placing or passing a bar-coded product on the reading window. It is supposed to be.

Reference numeral 4 denotes a display device including a display 4a for the clerk and a display 4b for the customer. When a product is registered by the barcode reader 3 or a product is registered by operating the preset key 1c or the like, the display device 4 is displayed. The product name and price are displayed. The display device 4 displays the total amount and various messages. Reference numeral 5 denotes a printing device, which is a receipt printing unit.
5a and a journal printing unit 5a. The first
In the figure, reference numeral 6 denotes a coin case, 7 denotes a bill case, 8 denotes an accessory case, and 10 denotes a control unit storage unit that stores a control unit.

This control unit has a configuration as shown in FIG.

That is, the keyboard 1 is connected to the CPU 20 via the keyboard interface 11, and the barcode reader 3 is connected to the CPU 20 via the interface 13.

The display device 4 is connected to the CPU 20 via the display controller 14, and the printing device 5 is connected to the CPU 20 via the printer controller 15. Note that reference numeral 16 in the figure denotes an external interface interposed between the external device 17.

The CPU 20, according to the control program stored in the ROM 21,
Processing is performed using the RAM 22 as a work area.

As shown in FIG. 3, in the RAM 22, an operator register 31 in which an operator code 30 is stored, an operator code 30 and a keyboard pattern identification number (in the figure, an identification number is omitted).
There is provided an operator table 33 in which 32 is stored in association with each other, and a function allocation table 34 in which function allocation data for each key is stored for each keyboard pattern recognition number 32.

The electronic cash register according to the present embodiment can be used if the operator code 30 is not entered because it is necessary to collect transaction data for each operator and to print out a person in charge of processing on a receipt. I cannot do it. Therefore, when the operator changes, it is necessary to input the operator code 30 without fail. The operator code 30 is stored in the operator register 31 and used for processing described later.

As shown in FIG. 4 (a), the keyboard 1 is
Ten keys and five keys 40 in the depth direction are arranged in a matrix. The numeral in the key 40 in FIG. 4A indicates the number of the key 40. Then, as shown in FIG. 4 (b) and FIG. 4 (c), various functions (“handler”, “deposit / current total”, etc.) are assigned to the numbers of the respective keys 40 of the keyboard 1. Two kinds of keyboard patterns
It is stored in the function allocation table 34. It should be noted that the numbers and symbols in these figures conceptually show the state to which functions are assigned, and do not indicate the actual surface state of the keys, that is, the so-called key top. FIG. 4 (b) shows a function assigned to a right-handed person, and FIG. 4 (c) shows a function assigned to a left-handed person.

When each key 40 of the keyboard 1 is pressed, the key code (hard code) of each key 40 is uniquely determined by a well-known matrix circuit. By allocating various functions to this hard code, the two types of keyboard patterns described above can be set.

With reference to FIG. 5, a description will be given of a key top when one of two types of keyboard patterns is selected. In this case, since there are two types of keyboard patterns, a key top in which one type of symbol or the like is displayed on one key 40 cannot distinguish the keyboard pattern, which hinders its use. Therefore, a mechanism for switching key tops in response to selection of a specific keyboard pattern is required. An example of this mechanism will be described below.

For example, the one shown in FIG. 5 (a) is one in which symbols corresponding to two types of functions to be assigned are described on a key top.

The one shown in FIG. 5 (b) has two types of symbols added to the key top, and two lamps are built in the key 40 corresponding to the symbol notation portions to correspond to the assigned functions. The symbol is illuminated from behind by a lamp. This figure shows a state where the “return bin” is illuminated.

In these embodiments, two kinds of symbols are displayed on the key top, but three or more kinds of symbols may be displayed according to the type of the keyboard pattern. In this case, three or more types of keyboard patterns can be handled.

Further, as another key top switching mechanism, one shown in FIG. 5 (c) can be considered.

That is, a groove 41 extending in the same direction is provided above the keys 40 arranged in the width direction, and a window 42 is provided at a front portion of the groove 41 at the same pitch as the arrangement pitch of the keys 40, and two kinds of symbols are provided. Band-shaped plates 43 alternately displayed at the same pitch as the set pitch are inserted into the grooves 41 so as to be able to advance and retreat.

Then, when changing the keyboard pattern, the plate 43
Is moved back and forth in the direction in which the key 40 is arranged, and the symbol exposed from the window 42 is changed so that a change in the function of the key 40 can be seen from the surface. In such a structure, if the plate 43 in which the symbols are displayed in various arrangements is replaced and used,
The keyboard pattern is not limited to two types, and can be easily applied to a case where a plurality of keyboard patterns are set.

After the power of the electronic cash register is turned on, functions are pre-assigned to the respective keys 40 of the keyboard 1 so as to form a right-handed arrangement as shown in FIG. 4 (b). ing. The reason is that the operator code 30 as an operation start condition cannot be input unless the arrangement of the keys 40 is determined when the keyboard pattern is recognized.

As shown in FIG. 3, in the operator table 33, a keyboard pattern recognition number 32 used by the operator is stored as an operator code.
Stored corresponding to 30. In the present embodiment, when "0" is stored in the keyboard identification number 32, it indicates a right-handed keyboard pattern, and when "1" is stored, it indicates a left-handed keyboard pattern. That is, FIG. 3 shows that a person with an operator code 30 of "1234" is selected for a right-handed person and a person of "1235" is selected for a left-handed person.

The writing and changing of data in the operator table 33 are performed using the keyboard 1. In this case, “0” is stored in the keyboard identification number 32 as an initial value corresponding to the operator code 30. Therefore, especially when "1" is not input as the keyboard identification number 32,
This initial value “0” is made to live as it is.

As shown in FIG. 3, the function assignment table 34 stores therein a function code corresponding to each function for each number of the key 40 for each keyboard identification number 32.

In the function assignment table 34 of the present embodiment, when the keyboard identification number 32 is “0”, the key number “1” is
Function code corresponding to P1 (Preset key No.1), Function code corresponding to P2 (Preset key No.2) for key number "2", Function corresponding to subtotal key for key number "50" Code is allocated. In the case of the keyboard identification number "1", the key number "1" has a function code corresponding to the return bin key, the key number "2" has a function code corresponding to the accounting key, and the key number "50". P1
Function code corresponding to 5 (preset key No. 15) is assigned.

Then, as shown in FIG. 3, when each key 40 of the keyboard 1 is pressed when the specific keyboard identification number 32 is selected, based on the function code stored corresponding to the key 40, It accesses the program in ROM21.

As shown in FIG. 3, the ROM 21 includes a function key processing program, a numeric key processing program, and a preset key processing program.

The function processing programs include a return bin processing program 50, an accounting processing program 51, and a subtotal processing program 52.
And so on.

The ten-key processing program includes a “0” processing program 53, a “1” processing program 54, and the like.

The preset processing program includes a “P1” processing program 55, a “P2” processing program 56,..., A “P15” processing program 57, and the like.

The control of this embodiment will be described with reference to the flowchart shown in FIG. This control is executed by a program stored in the ROM 21. This flowchart shows a process when the operator code 30 is input. That is, when the operator inputs the operator code 30 by pressing the "operator" key after inputting the four-digit operator code assigned to the operator using the numeric keypad, first, step 10 is executed. .

In step 10 (hereinafter, shown as S10 in the figure), the input operator code 30 is stored in the operator register 31 in the RAM 22. The operator code 30 is used when performing a process of totaling each operator or printing the operator on a receipt.

In step 11, based on the operator code 30 taken into the operator register 31, a flag is set for a specific function permitted by the operator code 30. This is important for business-critical functions like clearing data and changing bids.
This can be restricted for each operator. This flag is referred to when executing the processing after the key operation, and only the function for which the flag is set is executed.

In step 12, it is determined whether or not the keyboard pattern recognition number 32 stored corresponding to the handler code 30 is "1" with reference to the handler table 33. This is "1"
If it is, go to step 13. Here, the reason why the comparison between the keyboard pattern recognition number 32 and “0” is not performed is that the power supply of the electronic cash register is turned on as described above.
, The keyboard pattern recognition number 32 is “0”
Since there are only two types of keyboard pattern recognition numbers 32, "1" and "0", it is only necessary to detect a case other than "0".

In step 13, the identification number 32 is obtained from the function allocation table 34.
Is set to select "1". With this setting, the key layout is selected. That is, when the key 40 is pressed, based on the table in which the identification number 32 is “1”,
By accessing a specific program in ROM21,
The function assigned to the key 40 is performed. As a result, the keyboard 1 functions as a keyboard for left-handed use when the read keyboard pattern recognition number 32 is "1".

If necessary in step 13 (the fifth
In the case of FIGS. (B) and (c)), a key top change process is performed.

As described above, in this embodiment, when the operator inputs the operator code 30 at the start of the operation, the operator code 30
Is obtained, the keyboard pattern recognition number 32 set in correspondence with is obtained. And this keyboard pattern recognition number 32
, The keyboard 1 is changed to a keyboard pattern suitable for the operator. Therefore, it is possible to work with the keyboard pattern most suitable for each operator.

In addition, in the electronic cash register according to the present embodiment, the operator code is always input at the start of operation or at the time of replacement in order to perform tallying for each operator. Therefore,
In particular, you can automatically change the keyboard pattern to your own style without using any extra operation.

Further, since a desired keyboard pattern is automatically selected based on the operator code 30, there is no occurrence of an erroneous operation or a key operation error due to a failure to perform a predetermined operation. .

FIG. 7 shows a keyboard in an electronic cash register according to another embodiment of the present invention.

This is a liquid crystal display as shown in FIG.
A touch panel 61 is provided on the upper surface of the device 60, so that the data surface and data input can be performed on the same surface. By the way, this LCD display 60 is 48
With the dot display of 0 × 200 dots, various patterns as key tops can be displayed as described later.

The touch panel 61 is provided on the upper surface of the liquid crystal display 60. When the operator touches the upper surface of the liquid crystal display 60, the touched position is detected. That is, around the liquid crystal display 60, five light emitting diodes 62 on the left side,
On the right side, five phototransistors 63 are provided facing each other. Further, ten light emitting diodes 64 (the number is omitted in the figure) are provided on the upper side, and 10 light emitting diodes 64 are provided on the lower side.
A plurality (similarly, the number is omitted) of phototransistors 65 are provided so as to face each other. Light emitting diode
Each intersection of the optical axes of the phototransistors 63 and 65 and the phototransistors 63 and 65 functions as a key.

At the intersection of the optical axes on the liquid crystal display 60, a keytop corresponding to the assigned function is displayed. This key top image is stored in the ROM 21 corresponding to each function code of the key, as shown in FIG.

When the touch panel 61 is touched with a finger as shown in FIG. 7 (b), the light emitting diodes 62 and 64 facing the touched position,
The connection between the phototransistors 63 and 65 is cut off. As a result, the touched position is recognized, and the function assigned according to the position is input.

By changing the arrangement of symbols and the like displayed on the liquid crystal surface device 60, various keyboard patterns can be appropriately displayed. On the maker side, a plurality of frequently used keyboard patterns are stored in advance,
Specially convenient for the user to use (depending on the preference of the operator)
A keyboard pattern can be freely set and registered. Examples of the setting are shown in FIGS. 8 (a) to (g).

That is, the one shown in FIG.
, A preset key group 70, a first function key group 73, a numeric keypad 72, and a second function key group 71 are displayed. This display state is usually suitable for use by a right-handed operator. The area outside the key groups 70 to 73 is a part to which no function is assigned, and is invalid even if touched (the same applies to the following examples).

FIG. 8 (b) shows the liquid crystal display 60 on the surface thereof.
A preset key group 70, a first function key group 73, a ten key 72, and a second function key group 71 are displayed. This display state is normally suitable for use by a left-handed operator.

FIG. 8C shows a liquid crystal display 60 having a function key group 74 in which a first function key group 73 and a second function key 71 are integrated between a preset key group 70 and a numeric keypad 72. It is to be displayed.

The one shown in FIG. 8 (d)
The preset key group 70, the numeric keypad 72, and the first function key group 73 are displayed side by side in the horizontal direction, and the second function key group 71 is displayed above them.

In FIG. 8 (e), the size of one key top is larger than that of the other key tops. In the figure, the operability is improved as a so-called double key in which the “deposit / current total” key is twice as large as the other keys. In this case, the same function is allocated to adjacent areas. Further, the key top image (in this case, “deposit / current total”) is
To occupy one area.

FIG. 8 (f) shows that the surface of the liquid crystal display 60 is
A key top image indicating a specific function (“deposit / current total” in the figure) is displayed independently. In this way, when the key tops are displayed independently, it is possible to reduce the number of key mistouches.

FIG. 8 (g) shows the display section 75 for the clerk displayed above the key groups 70 to 73 on the liquid crystal display 60. Numerical values, characters, and the like are displayed on the clerk-side display section 75 in order to confirm the input items, the amounts, and the like.

Further, on the surface of the key top of the liquid crystal display 60, a key indicating a function prohibited from being operated by the operator may not be displayed. By doing so, the display is simplified, the key operation is facilitated, and erroneous touches can be reduced.

As described above, while assigning each function to the area on the liquid crystal display 60, the key top image displayed thereon corresponding to each area can be appropriately changed according to the use or the operator. Therefore, the keyboard 1 can be used with an optimal keyboard pattern for each operator.

In the present embodiment, a handler table 33 as shown in FIG. 9A is stored in the RAM 22 as in the above-described embodiment. The keyboard pattern recognition number 32 corresponding to the various keyboard patterns as described above is the operator code.
Stored corresponding to 30. In this embodiment, any one of “0” to “N” is stored as the keyboard identification number 32. For example, in the present embodiment, the operator code 30 is "123
In the case of "4", "0" is stored, and in the case of "1235", "2" is stored.

Also, in the present embodiment, a function allocation table 34 is provided as shown in FIG. In the function assignment table 34, function codes corresponding to each function are assigned and stored for each key 40 number corresponding to the keyboard identification number 32. For example, in the present embodiment, when the keyboard identification number 32 is “0”, the function code (5001) of P1 (preset key No. 1) is assigned to the key number “1”, and the key number “2” is assigned to the key number “2”. Function code (5002) of P2 (preset key No.2) is assigned. In the number of the keyboard identification number "1", the key number "1" has a function code (1005) corresponding to the accounting key.
Is allocated.

In FIG. 9B, the machine code (0000) indicates that there is no assigned function.

When each key 40 of the keyboard 1 is pressed, the key processing program of the ROM 22 shown in FIG. 10 is accessed based on the function code corresponding to the key 40.

The ROM 21 stores a function key processing program 80 and a ten-key processing program 81, as in the above-described embodiment.
And a preset key processing program 82.

The control of this embodiment will be described with reference to the flowchart shown in FIG. This control is executed by a program stored in the ROM 21. This flowchart shows a process when the operator code 30 is input.

In step 20, the input operator code 30 is stored in the RAM 22
Is stored in the operator register 31. As in the above-described embodiment, the handler code 30 is used when data is totaled for each handler or when the handler is printed on a receipt.

In step 21, based on the operator code 30 taken into the operator register 31, a flag is set for a specific function permitted by the operator code 30. In this system, important functions such as data clearing and unit price change can be restricted for each operator. This flag is referred to when a process assigned to the key 40 is executed after a specific key is pressed, and only the specific function for which the flag is set is executed.

In step 22, it is determined whether or not the keyboard pattern recognition number 32 stored corresponding to the operator code 30 is “0” with reference to the operator table 33. If not “0”, the process proceeds to step 23.

In step 23, it is determined whether or not the keyboard pattern recognition number 32 is "1". As a result, when it is “1”, the process proceeds to step 24.

In step 24, a setting is made from the function allocation table 34 to select the one whose keyboard pattern recognition number 32 is "1". .

In step 25, a specific key top image is displayed on the liquid crystal display 60 at a position corresponding to each key. Then, when a specific key 40 is pressed, a function assigned to the key 40 is performed by accessing a specific program in the ROM 21. Therefore, the keyboard 1 reads the keyboard pattern recognition number 32
Functions as a keyboard corresponding to “1”.

If the keyboard pattern recognition number 32 is other than "1" in step 23, the steps corresponding to step 23 are repeated until the keyboard pattern recognition number 32 corresponding to the operator code 30 matches.

In the conventional electronic cash register, the keys normally used when inputting the product name, amount, etc. are used instead of the keyboard pattern setting,
The operation in the setting mode was difficult to understand, and the setting operation was complicated.

However, in this embodiment, since the keyboard is constituted by the liquid crystal display 60, the display can be easily changed to a display dedicated to the keyboard pattern setting. Therefore, the setting operation can be easily performed.

The setting procedure and guidance are displayed on the LCD
The setting operation can be further simplified.

In each of the above embodiments, the operator code 30 is input from the numeric keypad of the keyboard 1.
Can be adopted as an input method. For example, a barcode card, a magnetic card, or an IC card created for each operator can be used. The operator may be distinguished by voice input.

In the above embodiment, the power supply of the electronic cash register is
An initial value is set in the keyboard pattern identification number 32 so that the operator code 30 can be input immediately after turning it on. However, if an input method other than the keyboard is used, such an initial value is used. Need not be set.

In each of the above embodiments, all the keys 40 constituting the keyboard pattern are changed according to the operator. However, even if the pattern of some keys 40 in the keyboard 1 is changed. good.

In the above embodiment, an electronic cash register is used. However, similar effects can be obtained by applying the present invention to a POS register or an electronic balance for face-to-face sales that requires input of an operator code.

[Effects of the Invention] As described above, according to the sales data processing device of the present invention, a plurality of keyboard patterns in which functions are assigned to keys are stored, and an operator code assigned to the operator is input. Then, a specific keyboard pattern is selected and called based on the operator code. In this type of device, inputting the operator code prior to use is an essential operation because of necessity such as totaling transaction data for each operator. Therefore, a keyboard pattern suitable for each operator can be obtained without performing extra operations. Also, the user does not forget to select a keyboard pattern. Therefore, it is possible to prevent key operation errors and business confusion beforehand.

[Brief description of the drawings]

1 to 6 are views showing an electronic cash register according to an embodiment of the present invention. FIG. 1 is a perspective view showing an external structure of the embodiment, and FIG. FIG. 3 is a block diagram showing an electrical configuration, and FIG.
FIG. 4 (a) is a plan view showing a keyboard in the embodiment, and FIG. 4 (b) is an arrangement concept of a right-handed keyboard pattern in the embodiment. FIG. 4 (c)
5A to 5C are plan views showing the concept of arrangement of a left-handed keyboard pattern in the embodiment. FIGS. 5A to 5C are diagrams showing a key top changing mechanism of the keyboard in the embodiment. Fig. 7 is a flowchart showing a control procedure in the embodiment. Figs. 7 to 11 are views showing an electronic cache register according to another embodiment of the present invention. FIG. 7B is a plan view showing the keyboard in the example, FIG. 7B is a side view showing the keyboard in the embodiment, and FIGS.
(G) is a plan view showing various key tops in the embodiment, FIG. 9 (a) is a diagram showing the concept of an operator table in the embodiment, and FIG. 9 (b) is function allocation in the embodiment. FIG. 10 shows the concept of a table.
FIG. 11 is a conceptual diagram showing an M configuration, and FIG. 11 is a flowchart showing a control procedure in the embodiment. 1 ... keyboard, 21 ... ROM, 22 ... RAM, 30 ... handler code, 31 ... handler register, 32 ... keyboard pattern recognition number, 33 ... handler table, 34 ... function allocation table , 40 ... key, 41 ... groove, 42 ... window, 43 ... plate, 60 ... liquid crystal display, 62, 64 ... light emitting diode, 63,
65 Photo transistor.

Claims (2)

(57) [Claims] 1. A sales data processing apparatus having a keyboard in which keys are arranged in a matrix, comprising: storage means for storing a plurality of keyboard patterns each having a function assigned to said key; Sales data processing, comprising: code input means for inputting a code; and calling means for selecting and calling a specific keyboard pattern from the storage means based on an operator code input from the code input means. apparatus. 2. A sales data processing apparatus comprising a keyboard in which keys are arranged in a matrix, comprising: storage means for storing a plurality of keyboard patterns each of which has a function assigned to the key; and an operator assigned to the operator. Code input means for inputting a code, call means for selecting and calling a specific keyboard pattern from the storage means based on the operator code input from the code input means, and corresponding to the keyboard pattern called by the call means And a display changing means for changing the display on the keyboard.