DE2319849C2 - Data entry device for an electronic cash register or accounting machine - Google Patents

Description

60

The invention relates to a data entry device for one with a tens and function key 65, ur, a control unit, a computer, several secure, a display device and an electronic cash register equipped with an ickwerk or booking machine that uses a magnetic tape device to save the booking made processes is in connection and whose keyboard cooperates with an input buffer whose input In the event of incorrect entry, written data to any ger position of the input process is eliminated by means of a delete key assigned to the input buffer be able.

In electronic data processing systems, it is known to key data into a buffer memory to be registered and to show in a display device. Before further processing, the gauged data visually for the purpose of making corrections. In the Fachbud by James Martin, Design of Real-Time Computer systems 1967, Prentice-Hall Incorporation, are on the Ropes 305 and 307 described corresponding systems

Further, in the USA.-Patentscbrift 3593 31) describes a mi a magnetic tape recorder equipped electronic data capture device, which is also to be detected, since tenblöcke comprises a buffer memory for receiving the. With this device, the data of each data block must be keyed in and compared twice, one after the other. If they match, they are transferred to the magnetic tape and if they do not match, corrections can be made in places using appropriate manual control means.

In the case of booking machines, it is known to use a cancellation key to find a faulty booking item that was previously entered into the machine using the value keyboard and a function key and processed mathematically was to be deleted in such a way that the same posting entry with the opposite sign and accordingly marked is introduced again into the booking engine and processed. Are one such posting items still have additional identification data, for example the seller number, a quantity, a commodity number or the like, is assigned to the cancellation by keying in all of them twice Values particularly laborious.

With the previously known electronic data processing systems, there is only the possibility of to temporarily store a single data block or data set prior to further processing, to correct it and delete it if necessary.

The invention is therefore based on the task of canceling one of several individual bookings composing posting items by means of a single manual control device without offsetting posting carry out and the cancellation process before or after the computational processing of individual parts of the To initiate booking items at any point in the booking process.

The data input device according to the invention is characterized in that the individual data records one of several completed data entry processes (product group, item number, quantity of goods, Unit price) after their first processing (printing, display) the buffer memory successively transferred to a further memory designed as an intermediate buffer and after the second processing (execution of arithmetic operations and the like) for the storage pending posting items only during the initiation of a new posting process in assigned Total memory or the magnetic

end device is supplied or the entire content of the I memory at a freely selectable point in the booking process by pressing a memory assigned to it Cancellation key is completely deleted, a. Advantageous developments of the invention are in covered the subclaims

The invention is illustrated below with reference to the drawings explained in more detail. Show it

Fig-t ^e ' ⁿ cash register terminal in perspective view,

Fig. 2 is a schematic circuit diagram of the cash register,

F i g. 3 a data flow plan,

Fig. 4 an overview of the program sequence after pressing the numeric keypad and a Λ function or control key,
~ * F i g. 5 to 13 an explanation of the individual

Symbols used in program sections, * F i g. 14 the program section »Entering the wa-

-Ji rerunenge «, ao

"" * Fig. 15 the program section »Entering the article number«,

16a and 16b show the program section "Entry of the price of goods and the memory address",

F i g. 17 the program section »Cancel«. as

One shown in FIG. 1, designed as a cash register terminal, is an electronic data processing system equipped with an input 2 designed as a keypad, on which a numeric keypad 3, function keys 4 to 6 for entering the quantity of goods, the article number, the seller number and the like, control buttons 7, 8 for determining subtotals and totals, process keys 9, a cancellation key 10 and a memory selection keyboard 11 with memory selection buttons 12 are arranged. A guide display device is located above input 2 13 and two numerical display devices 114 and 15, respectively, which are keyed in for displaying or calculated values or to display the selected memory address. Left of the Input 2, a printing device 16 designed as an add-on unit is provided, which has a window 17, through which a journal strip 18 can be viewed, as well as an output chute 19 from which receipts, for example Receipts, come out after printing and cutting. Located below the window 17 there is a horizontally arranged printing table 20, which receives bills to be printed on. The cash register terminal 1 is expediently mounted on a lower box which is used to hold a drawer 21

The electronic cash register terminal 1 (FIG. 2) has a central control unit 22 which is connected internally via conductor 23 to a computer 24, a program memory 25, a data memory 26, a printing unit memory 27, several total memories 29, the printing device 16, the input 2 and the display devices 13 to 15 and by means of a conductor 30 externally with a magnetic tape recorder 31, the drawer 21 and an optical reader 32 in connection stands.

As shown in FIG. 3 can be seen via the inputs 2 entered data initially in an input buffer, preferably designed as a shift register 33 and the selected memory addresses are stored in an auxiliary input buffer 34, checked and then in a first processing 35, if necessary, also treated arithmetically In this processing stage the processed data is printed in the printing device 16, in the display device or devices 14, 15 displayed and then transferred to an intermediate buffer 36 in the intermediate buffer 36 pending data will only be used when entering the following data for a further booking introduced into the second processing 37 and, after its preparation, when the data is entered, another Booking or in the case of the summation in the selected summation memory 29 or the connected magnetic tape recorder 31. From the second processing 37, the processed Data is also transmitted to a central data acquisition system 39 via an electrical transmission line 38 will.

The general timing for making bookings after using the numeric keypad and a function or memory selection key is illustrated in more detail in FIG The numerical value of a booking is entered in input 2 using the numeric keypad 3 and then entered a function or memory selection key 4 to 6 or 12 is pressed. After the input process, in the processing stage 40 an examination of the admissibility of the data just introduced is carried out If the check process is positive, the data of the previous booking are sent in the next processing stage 41 the assigned summation memory 29 and the magnetic tape recorder 31 are transmitted. In the next processing stage 42 the further processing of the data entered last is carried out and the next admissible one Input process specified. After processing, the prepared data is stored in the printer 16 printed out and displayed in the display devices 14, 15.

Based on a typical billing process, the associated booking processes are shown below set out in detail.

For a sales transaction, a quantity of goods of 2.5 kg at a unit price of 28.60 DM / kg and the Item number 0017 and another item with item number 0025 at a unit price of DM 16.75 will.

The symbols used in the program excerpts described below are shown in FIGS. 5 to 13 explained in more detail

The program sequence when entering the quantity of goods 2.5 kg is based on FIG. 14 emerges. In this process the initial condition is that the corresponding lamp in the guide display 13 lights up. In the Input 2 is made using the numeric keypad 3 (Fig. 1) the quantity of goods 2.5 kg including the decimal point »DP« is entered and saved in the input buffer 33 (Fig. 3) After pressing function key 4 (quantity of goods), a check must be made in program section 43 whether it was permissible to press function key 4. Furthermore, in the program section 44 checks whether no key on the numeric keypad 3 has previously been pressed and in program section 45 whether a incorrect keying in of a quantity specification preferably designed as a bistable toggle switch! Flag 46 set for the same booking associated subsequent data entry processes indicates that the quantity of goods entry is correct was carried out. Subsequently, it is checked in the sub-program 47 whether in the intermediate buffer 36 (FIG. 3) no Data is stored. In the present case, it's going the test is negative and a marker 48 is deleted, the one with the comma control unit known per se

is related. The next query 49 relates to whether the comma key of the numeric keypad 3 has been pressed if this test process is positive runs, the flag 48 is set again. In the next program step, the content of the intermediate buffer 36 is deleted, the content of the input buffer 33 in FIG a corresponding memory area of the intermediate buffer 36 is transferred and the input buffer 33 is cleared. The quantity of goods is then displayed in the Printing device 16 is printed and displayed in the display device 14.

The article number 0017 can be entered when the corresponding lamp lights up in the guide display 13 (Fig. 15) in entry 2 the article number 0017 is entered using the numeric keypad 3 and stored in the input buffer 33 (Fig. 3) After pressing the function key 5 (Article number) the test processes are carried out in program levels 50 to 52 and if the result is positive Output a marker 53 is set and checks whether the marker 46 (FIG. 14) was previously set. If the test process has a positive outcome, the content of the The input buffer 33 (FIG. 3) is transferred to a corresponding memory area of the intermediate buffer 36 and the input buffer 33 is cleared. The item number 0017 is printed in the printing device 16 in this program section and displayed in the display device 14.

The input of the unit price and the memory addresses are shown in FIGS. 16a and 16b in the program sequence

When a memory selection button 12 (FIG. 1) is pressed, its address (for example 0017) is saved in the The auxiliary input buffer 34 (FIG. 3) already mentioned is transmitted and displayed in the display device 15

If after entering the kg price of 28.60 DM using the numeric keypad 3 and a Memory selection button 12 in the test area 54 the test process is positive, a flag 55 is set and then asked whether a quantity or an article number has already been introduced. Does this also run If the query process is positive, the content of the auxiliary input buffer 34 is transferred to a memory area of the intermediate buffer 36 (FIG. 3), displayed in the display device 15 (FIG. 1) and transferred to the printing unit memory 27. Then the content of the input buffer 33 is introduced into a corresponding storage section of the intermediate buffer 36 and the input buffers 33 and 34 are cleared

It is now queried again whether the marker 46 (FIG. 14) is set. If “no”, the quantity “1” is inserted into an assigned memory area of the intermediate buffer 36. If “yes”, the quantity of goods 2½ kg is multiplied by the price per kg of 28.60 DM in program stage 56 (FIG. 16b) and the result (total price) of 71.50 DM is written into a corresponding memory area of the intermediate buffer 36 . The number of digits in question is determined and checked in program stage 57. If the test result is positive, the flag is set 58 is set and any previously set flags 46, 53 and 55 are deleted. Following the deletion processes, the total price of 71.50 DM will be in transferred to the printing unit memory 27, the entire contents of which are printed out and in the display devices 14.15 displayed

If, however, the data of a booking item in the intermediate buffer 36 are due to any Error, for example if you entered an incorrectly

ίο unit price, not further processed, d. H. in the Magnetic tape recorder 31 (FIG. 2) are transferred or stored in the assigned accumulation memory 29 (FIG. 3), the cancellation key 10 already mentioned is used according to FIGS. 1 and 17 actuated This is followed in the Program section 59,60 checks whether the cancellation key 10 may be pressed and whether a quantity of goods has been keyed in If the test process is positive, the quantity of goods is transferred to the printer memory 27 together with the cancellation character “w ~”

ao and printed out Subsequently, a check is made in the program section 61 whether an article number is stored in the intermediate buffer 36, which is in the same way is handled and checks whether the kg price has been entered. If this check is positive, is the memory address and the determined total price are transferred to the printing unit memory 27 and printed out and displayed in the display devices 13 to 15 with a corresponding “cancellation” notice. The canceled total price will be transferred to a special Control memory introduced and the cancellation process The flags 46, 48, 53, 55 and 58 that may have been set and the content of the intermediate buffer are recorded in a counter 36 are deleted At the end of the cancellation process, the marker 62 is set, which is the cancellation entry

locked until the next booking

As already explained, the data of the first posting item is stored in the intermediate buffer 36 (Fig. 3). The second posting item to be entered only contains the item number "0017" and the item number. Price DM 16.75. As soon as the article number is entered according to the program sequence shown in FIG and the test procedures are positive, the data in the intermediate buffer 36 are the first Booking process to the summation memory 29 or the tape recorder 31 for further processing passed on. Finally, the purchase amount is drawn by pressing the control button 8. During this process, the data from the second booking process in the intermediate buffer 36 are also transferred to

the total memory 29 is transmitted and fed to the magnetic tape recorder 31 and the purchase price determined in the amount of 88.25 DM displayed and printed. The cancellation process can of course also already be after entering the quantity of goods and after the article numbering can be carried out. In the input buffer Before the first processing, data introduced in 33 can be deleted in a known manner by means of a delete key can be eliminated by setting the input buffer 33 to zero.

For this purpose 10 sheets of drawings

Claims (4)

Patent claims: 1. Data input device for one with a numeric and function keyboard, a control unit, a computer, several memories, a display device as well as an electronic cash register or accounting machine equipped with a printing unit, with a magnetic tape recorder to save the booking »o processes is connected and their keyboard with a. Input buffer cooperates whose Written data in the event of incorrect entry at any point in the entry process using a delete key assigned to the input buffer can be eliminated, characterized in that that the individual records are one of several completed data entry processes (Department, article number, amount of goods, Unit price) composite booking items after their first processing (printing, advertisement) from the buffer store (33) one after the other into another designed as an intermediate buffer Transfer memory (36) and after successful second processing (execution of arithmetic operations or the like) the posting items to be saved only during the embedding of a the new booking process is written into the associated summation memory (29) or the magnetic tape recorder (31) is supplied or the entire content of the memory (36) at a freely selectable location the booking process by pressing a cancellation key (10) assigned to the memory (36) is completely deleted. 2. Data input device according to claim 1, characterized in that the cancellation process the data in memory (36) are printed and displayed before deletion and for both Processes can be identified by additional identification markings. 3. Data input device according to claims I and 2, characterized in that preferably flags (45, 48, 53, 55, 58) consisting of bistable flip-flops for the identification of the individual Data records of a booking are provided, which are used to fulfill test conditions during the Program sequence when booking the quantity of goods, the item number and the like the termination or cancellation of a booking process will be deleted. 4. Data input device according to claims 1 to 3, characterized in that in a completed Cancellation process a marker (62) is set, the setting of which until a new posting items or the initiation of a total drawing process is maintained and the set flag (62) in the active position blocks the renewed triggering of a cancellation process.