JPS59860B2 - electronic cash register - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic cash register characterized in that a preset section of a data memory is initialized in advance with a hidden key.

In general, electronic cash registers are configured so that the code to indicate whether tax is to be paid or not, the setting of whether a unit price is required, etc. are set in advance for each product category. There are a large number of items that need to be set, the time taken to set them up is long, and setting errors occur.

For this reason, it is desirable for users to have an electronic cash register that allows them to set only the minimum necessary functions, but the functions desired by users cover a variety of items, and it is difficult to unify them. The present invention solves the above problems and provides an electronic cash register that allows the user to easily set general operating function conditions.

FIG. 1 is a block diagram of an electronic cash register according to an embodiment of the present invention.

In the figure, reference numeral 1 denotes a keyboard, which has numeric keys, product category keys, and transaction keys, receives a key scan signal from the control circuit 2, and outputs a key signal when a key is pressed. Generally, a keyboard is wired in a matrix, and 48 keys can be distinguished and input using six key scan signal lines and eight key signal lines.
Therefore, you can input the status of 10 numerical keys, 16 product department keys, 12 transaction keys, function keys such as clear key and non-attach key, and mode keys for registration, inspection, payment, and preset. . Reference numeral 11 denotes a hidden key, which is covered by a cover provided with a key separately from the keyboard 1, and is a key that is not normally used.

Although the hidden key 11 uses the same key scan signal as the keyboard 1, a different key scan signal may be used. When a key signal is introduced into the control circuit 2, the key signal is encoded, a program corresponding to the key signal is read out from the program memory 3, religion is performed using the numerical keys, and religion is performed using the product department keys. Then, department-specific registration is performed, and transaction-specific registration is performed using transaction-specific keys.

The initialization program in the program memory 3 is similarly read out and executed using the hidden key 11. In the case of a fixed number, it is stored in the first register 41 and displayed on the display circuit 5 at the same time.

The contents of the first register 41 are transferred to the second register 42 via gates Gl and G2, and data is transferred to and from the data memory 6. The second register 42 similarly stores data read from the data memory 6 via the gate G2, and is output to the control circuit 2 at the same time as the first register 41 for addition and subtraction. The contents of the data memory 6 are stored in the first, second and third address registers 7.
1, 72, and 73, and reading or writing is performed according to a signal from a read/write line (R/W) of the control circuit 2.

For example, the data memory 6 is provided with memories for storing 16 product categories, 12 transactions, the number of customers, total totals, etc., and each memory can store 10 digits of information.
It has a 4-bit digit configuration. First address register 7
1 selects each memory and selects a digit using the second and third address registers 72 and 73. The second address register 72 selects the lower eight digits out of ten digits, and the third address register 73 selects the upper two digits.

Therefore, if the memory is selected and read and written using only the second address register 72, it can be used as an 8-digit memory. The contents of the upper two digits selected by the third address register 73 store setting conditions such as taxation or non-taxation, negative sign, and fixed or free unit price for each product department memory. It has a storage capacity for 2 digits or 8 bits, and in addition to the above, it is also possible to store settings such as the number of digits for input digit restrictions at the time of registration and whether or not items are sold individually.

Reference numeral 8 denotes an initialization memory in which data to be preset is stored in advance, and the data corresponding to the preset sections 91 to 9n of each memory of the data memory 6 is stored in advance by the outputs of the first and third address registers 71 and 73. Output the contents.

Next, the operation will be explained using the flowchart shown in FIG.

When the hidden key is pressed, the first address register 71 is first set to the first memory address of the merchandise department. In the above example, if addresses 0 to 15 are the product department memory, the address "0", that is, the first address register 71 is in the state of being equal to the tally. Therefore, the first address register 71 of the data memory
The product department memory 61 and the first data 81 in the initialization memory 18 are selected. The third address register 73 selects either the upper two digits of the data memory 6 or the first data 81 of the initialization memory 18, and at the same time the read/write line (R/W
), the contents of the initialization memory 18 are written to the data memory 6. In other words, the contents of the first data 81 in the initialization memory 18 have been written to the first product category memory 61 in the data memory 6. Subsequently, the third address register 73 selects the remainder of the upper two digits of the data memory 6 and the remainder of the first data 81 of the initialization memory 18, and write processing is performed in the same manner as described above. Next, it is determined whether the writing process has been performed to the end of the product department memory, that is, the 15th item, and if not, the content of the first address register 71 is updated by "1" and the writing process is performed again.

When all the writing is completed, the contents of the initialization memory 18 are written directly into the upper two digits of the product category memories 61 to 6n of the data memory 6. The contents of the initialization memory 18, which are general operating function conditions, are written using the hidden key 11, but if you want to preset other items to the data memory 6, use the mode key of the keyboard 1. Do this in the preset state.

First, after entering the preset state, enter a number in the first register 41 and press the key for the product category you wish to write. In this case, the corresponding product department memory is selected by the first address register 71, and at the same time, the upper two digits of the product department memory are selected by the output of the third address register 73.
Writing is performed by a write signal on the read/write line (R/W). At this time, the output of the initialization memory 18 is inhibited by gates G4 and G5. Through the above preset processing, necessary conditions can be preset in sequence, so it is possible to preset conditions different from general operating functions as necessary to satisfy the user's wishes.

In the above example, conditions corresponding to general operation functions are stored in the initialization memory 18 in advance, and when the dealer or the user uses the hidden key 11, the conditions corresponding to the general operation functions are stored in the data memory 6. Functional conditions can be set, but the general operation function contents are all bits "0'".
Alternatively, in the case of "1", there is no need to separately provide the initialization memory 18, and writing can be performed simply by using an address signal and a write signal. However, all bits “
If it is set to 0 or 1, it may differ from the actual condition, so it is necessary to perform code conversion when reading the condition. For example, when limiting the number of input digits, it is necessary to convert the code so that if the memory content is "0", it means that the input is limited to 5 digits.As described above, the present invention uses numeric keys and product department keys. and a function key, a register for storing numeric key signals from the keyboard, a program memory in which a program is selected by the key signal, a data memory having a preset section and a data section; It consists of a hidden key that is not placed and a control circuit that executes a program using the hidden key and initializes the preset section of the data memory.The hidden key sets the preset section of the data memory to general operating and functional conditions. By initializing the preset section of the data memory in advance, the general operating and functional conditions are set, so there is no need to preset everything as in the past, and when the operating and functional conditions differ from the general operating and functional conditions, is very easy to use because you only need to change that part.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a flowchart explaining the operation.

Claims (1)

[Claims] 1. A keyboard having numeric keys, product category keys, and function keys, a register that stores numeric key signals from the keyboard, a program memory in which programs are selected by key signals, and a preset section and a data section. Hidden keys that are not located on the keyboard surface, Initialize memory that has general operating function conditions set, and Preset data memory based on the contents of the initialize memory by running a program using the hidden keys. An electronic cash register comprising a control circuit for initializing a section, and a preset section of a data memory set to general operating function conditions using a hidden key.