KR860000794B1 - Shopper's calculator - Google Patents

Abstract

The electronic calculator comprises manually operable members used to enter into the calculator information regarding quantity and price of a product and to cause the calculator to calculate an indicator of value of the product. The calculator also includes a device operable to cause the calculator to compare a first calculated value indicator with a second calculated value indicator. The manually operable members include members corresponding to different units of measurement of product quantities, and these members are arranged to select respective different mutipliers for the purpose of the calculation of the value indicator.

Description

Electronic calculator for buyers of goods

The accompanying drawings are external views of an electronic calculator for an article buyer according to the present invention.

The present invention relates to an electronic calculator for an article buyer for use in comparing and determining which buyer is most advantageous when purchasing an article in a supermarket, for example.

Conventionally, various types of electronic calculators have been used for various purposes, which are well known. For example, it is widely used to determine various calculations by inputting different types of information into a conventional calculator and operating buttons.

Known calculators, however, are not familiar with the operation of electronic calculators or are inexperienced in the calculations required when using them, which allows the purchase of the most favorable price for money from the various prices offered by the sellers. It is not suitable for making it easy to determine the application.

In many respects, the present invention provides a computer with information about the quantity and price of an article, the calculator being operable to calculate a value indication of the amount of the article, and a manually operable member: To provide an electronic calculator for a buyer, the means being operable to compare the first calculated value indication with the second calculated value indication and indicate which of them is a good value indication for the amount. have.

Therefore, the present invention allows the buyer to input the relative weight and price together in the calculator so that the two items can be compared with each other by performing the operation as described below, so that the buyer can quickly and easily An electronic calculator for purchasing goods that can be used for comparative determination is provided.

The present invention provides an improved purchaser electronic calculator that is simple and inexpensive to manufacture, using known techniques, and solves the long-standing unsolved problems that buyers usually encounter with packages of various sizes of similar articles. To provide a solution, and to provide an electronic calculator that provides a quick and easy way for the buyer to determine the most advantageous purchase.

From the preferred embodiment of the present invention below, it is provided with a simple non-mathematical representation, with a particularly hand-operable member capable of performing a special task when the calculator is operated, the following very simple and non-mathematical By following the rules, the effort to know certain mathematical rules and the need to deal with complex relationships between the various units of measure used for the item are reduced, while at the same time the buyer has an accurate indication of the value of the amount and the value of the different items. You can see that we can get a reliable comparison of.

The invention will be more clearly understood from the following detailed description of one embodiment of the invention by means of the accompanying drawings showing an electronic calculator according to the invention.

12 of the figure consists of a case 14 having side walls 16, 18, 20, and 22, and represents a purchaser electronic calculator in which a conventional power source and calculator electronics are housed.

There is a transparent panel 26 for displaying the result of the calculation of the calculator and a display frame 24 supporting it. Conventional keys are provided with numbers from 0 to 9 indicated by 56, a decimal point indicated by 58, and symbols for addition (+) subtraction (-) and multiplication (x), indicated by (60).

Keys or buttons that are operated to achieve the object of the electronic purchaser for an article buyer of the present invention may be a container or bottle 28, a weight in ounces 30, a volume in quarts 32, a bag or box 36 , Weight 38 in pounds, volume 40 in gallons, weight 46 in grams, and volume 48 in liters. On / off switch 44, or key 42 for equality (or / =) symbol, key 50 for division symbol (for / ÷) are provided. And (34) represents the best buy, which is pressed to get an indication of which of the two comparative evaluations determines the most favorable buy.

The electronic calculator according to the present invention makes it possible to compare prices of various items, and indicates which is the most favorable purchase for the price.

In general, it consists of a keyboard activated by pressing a display that displays the result of the comparison. Electronic components are housed in a case for protection and a battery is provided as a power source. The internal circuit performs the calculation by successively pressing the key of the key board and the desired result is displayed on the display.

The accompanying drawings show an embodiment of the present invention, and various modifications may be made without departing from the spirit and scope of the present invention and should not be construed as limited by the description herein.

It is easy to understand how to operate the calculator, assuming special cases encountered by the buyer. Assume that a buyer receives two sales offers when he or she wants to buy some type of item. The first offer of sale would be the total price of three bags of goods of one pound weight of $ 0.99. The second sale suggests the total price of two boxes weighing 500g each for $ 1.00. In order to answer the question "Which is advantageous?" In the two sales presentations, the buyer would, in a very simple manner, "buy three bags of £ 1 for 0.99 or two boxes of 500 g for 1.00". Enter to calculate your question. After doing so, by pressing the "best buy" button, the calculator displays "1" if the first item represents the most favorable purchase, or "if the second item represents the most advantageous purchase". 2 "is displayed. If they are nearly equal purchases, the calculator indicates this by displaying "E" by operating one suitable portion of the standard calculator display portion. In more detail, the user presses the calculator button in the following order to input information into the calculator for performing the calculation on the first article.

First calculation

In addition, the seventh operation makes the calculator memorize the unit price calculated in the first calculation and at the same time make the calculator perform the second calculation separately from the first calculation.

The purpose of the choice of number 16 in step 4 is to allow the calculator to always calculate the unit price in the same unit, ie dollars per ounce, regardless of the unit of weight actually displayed on the package of the article. The user simply tells the calculator which unit of measure is being used to package the item, and in response, the calculator automatically takes this into account when calculating the unit price. As a result, when this comes to a later stage for the comparison of unit prices, they are placed under appropriate conditions to compare with each other.

The actual water supply or series chosen by the various unit keys on the key board is:

The proper operating sequence for the input buttons is as follows: "2", "box", "5", "0", "0", "gram", "for / ÷", "1", "·", " 0 "," 0 "," or / = ". This causes the calculation circuit to calculate and display the unit price of the second article. The operation of the "gram" button selects the stored constant 0.0352422, which causes the weight of the article to be obtained in ounces during the calculation of step 5 so that the unit price is in dollars per ounce as in the final step of the first calculation, 0.028375 Becomes

compare

By pressing the "best buy" button, the unit price stored in the first calculation is compared with the unit price calculated in the second calculator. If the first one is higher, the calculation circuit displays "2" to indicate that the second item is a more advantageous purchase. If the second one is higher, " 1 " is displayed, indicating that the first article is a more advantageous purchase. If the results of the first and second calculations are equivalent, the calculation circuitry causes the appropriate portion of the display to move to point to the particular indication "E" (etc.).

In some cases, the calculations needed to confirm the most advantageous purchase among the two different price offers can be simplified than that described above. For example, the pricing may be three boxes of goods for $ 36 or five identical boxes of goods for $ 55. In such a case, the user can omit steps (3) and (4) in the above example during calculation of each step. In step 7 the calculator does not divide by ounces as obtained in steps 3, 4 and 5, but simply divides by the number of boxes as entered in step 1.

Similarly, if a price offer is two quarts for 99 cents or one liter for 99 cents, steps (1) and (2) in the above example are omitted, and the calculator is simply a liter or quart entered in step (3). Calculate that unit price simply using the number of.

It should be understood that, as far as the necessary electronic circuitry is concerned, the performance of the calculations is within the capabilities of those skilled in the art and can be performed by various conventional methods. Moreover, the specific order in this case with respect to the operation of the embodiment is not the only order used to carry out the present invention, but various other orders of button operation and calculation steps within the circuit of the calculator may be adopted to achieve equivalent results. Be aware of this.

The "can. bottle" key 28 has the same function as the "bag. box" key 36, so both of them need not be provided. For example, a single key may be provided instead of the indication "item".

In the above example, during the calculation of each step, the calculator derives the unit price of the article and also displays it once it has been calculated. This unit price is expressed in dollars per ounce or dollar per item, for example. However, the present invention has an equivalent effect as far as determining the most advantageous purchase even when the calculation procedure is operated to calculate, for example, numbers representing items or ounces per dollar. It also provides satisfactory basic data for comparison to identify the most advantageous purchase. In order to operate in this way, the calculator must be arranged such that in step 5b of the particular calculation described above the instruction divides by the next written number rather than dividing the previous result by it.

In the claims that follow, the terms "value for money" and "value for money" are used as general terms for any number calculated by a calculator that indicates the value for money presented by that particular item.

Claims (1)

A manually operable member capable of inputting information about the quantity and price of the article into the calculator to cause the calculator to calculate an indication of the value of the quantity of the article; An electronic calculator for a purchaser of goods, comprising operation means capable of comparing the second calculated value indication to indicate which value indication is advantageous for the amount of the article.

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