JPS5856896B2 - electronic cash register - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic cash register in which printed characters can be arbitrarily changed.

In conventional cash registers, numbers are used to classify products by department, so customers cannot tell which department the product belongs to even by looking at the receipt, and the operator also has a number on the surface of the key top when operating the keys. A receipt is issued by registering the product classification by looking at certain characters, but since the receipt is classified numerically, it is difficult to tell which department the product belongs to just by looking at the receipt, which can cause problems when processing returns, etc. It is occurring.

For this reason, it is necessary to print the product department directly on the receipt, and for example, cash registers that use dot printers are available, but if you set the character generator for the dot printer to a specific product department, other products will be printed directly on the receipt. Changing departments is not easy and is very expensive.

Therefore, the present invention makes it easy to change the characters or symbols representing product categories by changing the fixed product category memory of the character printing printer section using input from a normal keyboard, thereby providing an easy-to-use electronic cash register. This is what we provide.

FIG. 1 is a perspective view of an electronic cash register showing one embodiment of the present invention, which consists of a main body 1, a safe 3, and a slip printer 4 as an external printer. The printer 4 can print on standard recording paper.

Normally, the product category is printed in numbers on receipts and journals, and the slip printer 4 prints the product category in letters, but in this example, the product category is printed in letters for both.

A safe 3 is arranged under the main body 1, and opens in response to depression of a cash key on a keyboard 11.

FIG. 2 is a block diagram showing the configuration of FIG. 1.

In the figure, the same reference numerals are used for the same parts as in FIG. 1.

Key scan timing signals T1 to T7 are given to the keyboard 11, and a matrix-like key (third
A key signal is led to the control circuit 20 in response to the suppression of the signal (see figure).

Therefore, when the key is pressed, the control circuit 20 is activated, the built-in program is read out and executed, and the program is registered and executed.
Inspection and settlement will be carried out.

Reference numeral 12 is a mode key for switching and selecting the power on/off, registration, inspection, payment, and preset mode states.

13 is a non-volatile memory whose address is selected by the address register 14 and which is connected to the write/read signal line (R/
W) is mainly used for reading through the data line (DA), and rarely for writing.

Reference numeral 15 denotes a printer for printing receipts and jars, which, together with an external slip printer 4, prints characters for product departments and numbers for amounts based on signals from a print signal storage section 16.

Further, 17 is a display circuit which numerically displays the product category and amount based on the signal from the control circuit 20.

FIG. 3 is a diagram showing an example of the keyboard 11 in FIG.
~9 and 00 numerical keys, IIIIV product department key, number clear key <C), non-printing key (#), multiplier key (capital), subtotal key (ST), cash key (AT)
/CA), correction key (Void), deposit key, (R/A
), a return key (Pd/Rf), a tax key (TX), and a rental key (ch), which are wired in a matrix as shown in the figure. Placed.

FIG. 4 is a diagram showing an ASCII code table, in which the receipt journal printer 15 and slip printer 4 shown in FIG. The output of is given as an ASCII code signal.

ASCII code is represented by 8 bits, for example, the number 3
The upper 4 bits are hexadecimal B (1011) and the lower 4 bits are hexadecimal 3 (0011).

FIG. 5 is a block diagram showing essential parts of the control circuit 20 of FIG. 2.

In the figure, reference numeral 21 denotes a timing section, which generates timing signals T1 to T7 to the keyboard 11 in FIG.

Reference numeral 22 denotes a key input unit which, when the timing signal is transmitted via the keyboard 11, determines which key has been pressed based on the matrix relationship.

The key input section 22 outputs numerical signals, product department signals, and function signals through the number line N department line (9) and function line (F), respectively.

The output of the number line N is introduced into the register 23 via the gate g1, and the register 23 is connected to the gate g1. g2. It is stored in a circular manner via g3.

The department line (D) is connected to the arithmetic unit 24 and provides the arithmetic unit 24 with a product department signal.

The function signal is introduced into either the calculation section 24 or the hexadecimal conversion section 25 via gate g4.

26 is an input/output unit which outputs the parallel signal from the parallel conversion unit 27 or the parallel signal from the non-volatile memory 13 in FIG.
or output to .

The parallel converter 27 is the register 23 or the ASCII converter 28
It converts the serial signals from the

The ASCII converter 28 converts the contents of the register 23 into the ASCII code shown in FIG.

The arithmetic unit 24 normally inputs a function signal or a product department signal and a signal from the mode key 12, reads out a program from a program unit (not shown), and reads the program from the gate g.
1, g2. g3. g4 controls the input/output section 26, the parallel conversion section 27, or the ASCII conversion section 28, performs calculations on the contents of the register 23 and other storage devices (not shown), and specifies addresses to the address register 14 and It is used to read and write to the nonvolatile memory 13.

Next, the operation will be explained using FIGS. 2 and 5.

Numerical signals from the keyboard 11 are entered in a register 23 and displayed on a display circuit 17.

When registering by pressing the product department key after entering the number, the calculation unit 2
4, customer cumulative totals and departmental cumulative totals are performed.

At that time, the contents of the register 23 are converted to ASCII code via the ASCII converter 28, the parallel converter 27, and the output unit 26, and are given to the print signal storage unit 16. Printed by printer 4.

At the same time as the amount is printed, the characters of the corresponding product category are also printed, but for this purpose, the ASCII signal of the corresponding character is read from the non-volatile memory 13 before or after the numerical value is given to the print signal storage section 16.

For example, in the department corresponding to beer, 'BEER' and the amount are printed.

Since the printing of the product category is determined according to the ASCII code stored in the non-volatile memory 13, it will naturally be changed when changing the classification of the product category.

To do this, first, the mode key 12 is set to a preset position, and the calculation unit 24 is set to a preset state.

Therefore, game 1-g4 transmits the function signal to hexadecimal converter 25, converts the key signal into hexadecimal 'A-F' by suppressing the function key, and registers it via game 1-g2. It will be introduced on 23rd.

In other words, the function keys are hexadecimal "A-F" keys.

For this reason, the 4th
Hexadecimal input of the upper and lower bits of the ASCII code shown in the figure is possible.

For example, when introducing the characters "ABC", CI, C2
, C3, and the numeric keys and function keys of the keyboard 11 are used alternately to input the data into the register 23.

Thereafter, the product department key is pressed to write the ASCII code in the register 23 into the corresponding non-volatile memory 13.

In that case, the contents of the register 23 are introduced into the nonvolatile memory 13 via the parallel conversion section 27 output section 26, and written to the corresponding address (here) in response to a write signal.

The same process is carried out for other product categories, and appropriate characters (ASCII codes) are written to the corresponding positions in the non-volatile memory 13.

Once the ground preset is completed, the name will be changed to the new product category.

In the above example, there are 10 function keys, and only 6 are required for hexadecimal input during presetting, so the difference is 4.
You can use it as is as the original key.

For example, clear key C can be used to clear the register 23.

Although the non-volatile memory 13 is used in the above example, a normal memory element can also be used if it is constantly backed up by a battery.

In the above example, the receipt journal printer 15 and the slip printer 4 print characters corresponding to the product department, but only the slip printer 4 prints the characters, and the receipt journal printer 15 uses the conventional rotating drum printing method. It may also be configured to print a numerical product department number.

As mentioned above, the present invention relates to a keyboard having numeric keys and function keys, and signals (typically) from the keyboard.
A control circuit that performs number setting, calculation, and printing in accordance with this,
It consists of a preset storage circuit that stores signals from the keyboard encoded by a control circuit during presetting, and a printing section that prints characters corresponding to the preset contents of the preset storage circuit, and the characters to be printed can be changed. It is particularly suitable for electronic cash registers that print the names of product departments in text.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing one embodiment of the present invention.
FIG. 3 is a block diagram showing a keyboard, FIG. 4 is a diagram showing an ASCII code, and FIG. 5 is a block diagram showing a main part of the control circuit shown in FIG. 2. In the figure, 11 is a keyboard, 13 is a nonvolatile memory, and 20 is a control circuit.

Claims (1)

[Claims] 1. A keyboard with numerical keys and function keys, a mode key for switching mode states such as registration, inspection, preset, etc., a control circuit that normally performs number entry, calculation, and printing in response to signals from the keyboard, and a control circuit that controls the mode. When the keys are in the preset state, the function keys on the keyboard act as hexadecimal data input keys for inputting the coded data of printed characters, and the control circuit outputs the coded signals based on the data input by the function keys and numeric keys. The present invention is comprised of a preset memory circuit for storing data, and a printing section for printing characters corresponding to the encoded preset content of the preset memory circuit, and is configured such that the content of the preset memory circuit can be changed depending on the preset state of the mode key. Features an electronic cash register.