JPH0285952A - Portable currency converter with calculator - Google Patents

Abstract

PURPOSE:To facilitate the comparison by currency by providing a display device to an output part to show the computing results of four rules arithmetic together with another display device which shows the arithmetic results after the conversion of currency. CONSTITUTION:The currency of the other country is inputted with the keys 3 and displayed on a right panel 1. Then an exchange key 5 is pushed and the numerical value obtained by multiplying the value registered on the right panel 1 by a currency conversion rate, i.e., the currency of its own country is displayed on a left panel 2. Further the arithmetic processes and results obtained via the ten keys 3 and a keys 4 for four rules of arithmetic are displayed on the right panel 1. The numerical value displayed on the right panel 1 is multiplied by a currency conversion rate and displayed on the left panel 2 with push of the key 5 even in a process of calculation. In such a constitution containing two display devices, both the currency of the other country and the currency of its own country can be displayed simultaneously. Then a user can easily perform the comparison of currency.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a currency converter. More specifically, the present invention relates to a currency converter that outputs an amount after converting the rate when a currency amount is input after inputting currency rates 1 to 1.

[Summary of the invention]

When shopping in a foreign country, the present invention displays the 81m process and result of four arithmetic operations on one of two display devices, and at the same time converts the numerical value displayed on the aforementioned display device into currency on the other display device. By displaying the results, the results of currency conversion are made easier to understand.

[Conventional technology]

Conventionally, portable currency converters display the value before conversion and convert the currency by pressing a button, etc.
At this time, it is known to erase the numerical value before conversion and display the numerical value after conversion.

[Problem to be solved by the invention]

When shopping in a foreign country, you convert the currency of the other country into your home currency to determine whether the item you are buying is expensive or cheap based on the value in your home country, but with conventional portable currency converters, Because the previous value is deleted, there is a problem that it is not easy to compare the value of the home currency and the value of the other country side by side. Also, in some foreign countries, excise tax is paid separately from the list price, so the list price must be multiplied by the excise tax rate before conversion into currency, so it is necessary to memorize or memorize the results of the 31 calculation. There is a problem that cannot be solved.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention provides a device for displaying the number of the destination country's currency and the process and result of the four arithmetic operations as a display device of the output section, and a device for displaying the destination country's currency, the process of the arithmetic operation, and the resultant numerical value. 2 of the device that calculates and displays the product of the currency rate by
configure one display device.

[Effect]

When the currency of the other country is input using the portable currency converter configured as described above, the number is placed on one display device and at the same time, the result of multiplying the currency rate is displayed on the other display device. Therefore, the user can compare the currency of the other country and the currency of the home country at the same time. In addition, since one display device displays the numerical values of the four arithmetic operations and the resulting numerical values sequentially multiplied by the currency rate and displays on the other display device, in the case of purchases that pay excise tax, the currency conversion results at the list price and Since you can compare the currency conversion results after adding the excise tax in your home currency and the currency of the other country, you can instantly understand whether the items you are buying are expensive or cheap. Also, it is convenient because there is no need to memorize the results if Iii [.

(Example〕 An embodiment of the present invention will be described below based on the drawings.

In FIG. 1, a currency conversion rate is input in advance using the rate key 6. When the rate key 6 is pressed, the number 1 is displayed on the liquid crystal panel 1 on the right side, and when a currency conversion rate is input using the numeric keypad 3, the currency conversion rate is displayed on the liquid crystal panel 2 on the left side. Currency conversion rate is completed by pressing equal. The currency conversion rate is stored even after the switch is turned off, and is held until the currency conversion rate is changed. Next, when the currency of the other country is input using the numeric keypad 3, it is displayed on the right panel 1. When the exchange key 5 is pressed at this time, the left panel 2 displays a value obtained by multiplying and dividing the value placed on the right panel by the currency conversion rate, that is, the home currency.

Furthermore, the calculation process and results using the numeric keypad 3 and the four arithmetic operation keys 4 are displayed on the right panel 1, and even during the calculation process, by pressing the exchange key 5, the numerical values displayed on the right panel 1 will reflect the currency rate. The multiplication is calculated and displayed on the left panel. The inverse key 7 is a key for converting the home currency into the currency of the other country. By pressing the inverse key 7, a value calculated by dividing the conversion rate by the value displayed on the right panel 1 is displayed on the left panel 2.

〔Effect of the invention〕

As described above, in this invention, since the currency of the other country and the currency of the home country can be displayed simultaneously using two display devices, the user can easily understand the comparison of currencies. In addition, since the four arithmetic operations and currency conversion can be performed in parallel and sequentially, operations can be easily performed when shopping with the excise tax included.

[Brief explanation of the drawing]

FIG. 1 shows the physical components of one embodiment of the present invention. 1...LCD panel, 2...LCD panel, 3.
...Numeric keypad 4...Four arithmetic operation keys 5...
Exchange key 6...Rate entry key 7...Inverse key Honmenro σ plan tank floor plan Figure 1

Claims (1)

[Claims] A portable currency converter that has a display device in the output section and four arithmetic operation keys, a numeric keypad, and a function key for currency conversion in the input section. What is claimed is: 1. A portable currency converter characterized by having two display devices for displaying a currency.