JPH03280148A - Electronic calculator - Google Patents

Abstract

PURPOSE:To prevent the malfunction of a user beforehand by turning all key operations other than a corresponding clear key into a unselectable state, and making it visible when an error is displayed once. CONSTITUTION:Prescribed key input is executed by using a numeral key 76 or an arithmetic key 74, etc., and a CPU 21 decides whether the result of arithmetic operation at that time fell into the error because of, for instance, overflow, etc., or not, and in a state that there is an error, it displays the result of the arithmetic operation and a mark 'E' to show the error on a display part 73. Next, it turns all the keys other than a clear key group into the non- selectable state by turning the keys other than an AC and a C keys into a netted state by changing the display. Thus, the keys are turned into non- selectable keys so that second pressing to cause erroneous operation can not be executed, and it comes to quite obvious for the eyes of a man that the key can not be depressed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a calculator device, and particularly to switching the display of operation keys.

[Summary of the invention]

The present invention relates to a calculator device, and particularly relates to display switching of operation keys, and in a calculator device having numeric keys, arithmetic keys, and a clear key, the present invention includes a detection means for detecting an error in calculation, and a detection means for detecting an error in a calculation, and a detection means for detecting an error in a calculation. and a selectable means that makes the key inoperable, and the state of the selectable means is changed to notify the user that the key has become inoperable, and further operation of the operation key is meaningless. In addition to disabling the operation, the disabled state is visualized,
This prevents the user from performing unnecessary operations.

[Conventional technology]

Conventional calculator devices have an input information display section in addition to operation keys such as a numeric keypad, operator key, clear key, and all clear key, and are designed to display the results of four arithmetic operations on the input information display section. has been done. Particularly in multiplication with a large number of digits, when the answer exceeds the number of digits that can be displayed on the display section and the result cannot be displayed or calculated, an error message such as a mouth is displayed. Such an error message is also displayed when input information exceeds the number of digits that can be stored in the calculator's memory.

[Problem to be solved by the invention]

As mentioned above, when an error message is displayed on the display, there are many keys that are meaningless even if you try again on the calculator.For example, even if you press the numeric keypad, operator key, etc. key which ignores the operation but cancels the last entered numerical value and calculation; concave key which clears all human power and returns the calculator device to its initial state;
In addition, the α key and the like for canceling the error state and validating the numerical value shown on the display must operate even after the error is displayed. However, in conventional calculator devices, all operation keys can be pressed.

For this reason, there are devices that display an error message and emit an alarm sound, but even in this case, it is possible to perform an incorrect operation, that is, to press a meaningless key several times. This results in extra operations.

The present invention was made to solve the problem of ridges, and its purpose is to make the key non-selectable so that it cannot be pressed a second time before performing an erroneous operation. This is done so that it is obvious at a glance that a key cannot be pressed, thereby preventing erroneous operations.

[Means to solve the problem]

An example of the calculator device of the present invention is shown in FIGS. 1 and 2, in which the calculator device has a number key (76), an arithmetic key (74), and a clear key (71). It is equipped with a detection means for detecting the occurrence of the occurrence, a selection disabling means for making keys other than the clear key (71) inoperable by the detection means, and changing the state of the selection disabling means to disable the operation. This allows the user to know that the state is enabled.

[Effect]

In the calculator device of the present invention, once an error display is performed, selection is disabled except for the clear key group, and since this is visualized, it is possible to obtain a calculator device that is free from erroneous operations.

〔Example〕

Hereinafter, a case will be described in which the calculator device of the present invention is applied to an electronic notebook device. Prior to explaining the flow charts and projection screen diagrams in FIGS. 1 and 2, the overall configuration of the apparatus of the present invention will be explained with reference to FIGS. 3 and 4.

In FIG. 3, a left side housing (17) consisting of left and right housings (16) and (17) is equipped with a display device such as a liquid crystal display.
A display section (1) is formed. This display section (1) displays image data from a CPU, etc., which will be described later, and an input tablet (2) consisting of an input device such as a so-called transparent touch sensor is mounted on the surface of the display section (1). ) is provided. Also, (3) is a pen that cooperates with this input tablet (2) to input arbitrary data, etc., and this pen (3) and tablet (2) are connected to this pen ( 3) and the tablet (2), the coordinate position can be detected even when the pen tip is not in contact with the tablet (2), and the cursor is positioned opposite the pen tip. It is done as shown.

By taking out this pen (3) and touching the input tablet (2) with the tip of the pen, information such as the contact state and contact position is supplied to the CPU via the code (4) etc., and arbitrary data can be generated. etc. are input. Furthermore (5a)
(5b) (5c) (5d) and (6a) (6b)
(6c) and (6d) are predetermined key switches, and signals from these are also supplied to the CPU.

Further, (7) is a speaker section, and (8) is a battery housing section, in which a battery for power supply is housed inside a lid that is opened and closed by releasing the locking mechanism (9). Furthermore, (10) is a power switch, and (11) is a microphone. Also (12)
(12a) is the recording key, (12b) is the playback key, (12C) is the stop key, and (12d) is the volume adjustment key that allows you to adjust the volume to high, medium, or low. By pressing and sliding these operation keys (12), audio signals supplied to the microphone (11) are recorded and emitted from the above-mentioned speaker section (7). Furthermore, (13) shown with a broken line is ROM, RA
Socket into which an IC card such as M is inserted and connected (14)
is an expansion socket or the like for connecting with external equipment, etc., and is provided on the side surface of the right housing (16).

Further, (15) is a hinge that houses a flexible substrate etc. for transmitting signals, and this hinge (15) allows this device to be folded in two without suffering from electrical interference. When used, this device measures approximately 29cm in length when expanded.

Width is approximately 20.5cm, thickness when folded is approximately 4am
The size of the display part (1) is approximately 15cm x
1 (1 cm)

Further, in this device, the built-in hardware configuration is as shown in FIG. In the figure, (2
1) is a CPU, and (22) is its path line, through which various functional ICs and the like are connected. First of all, (23) is a ROM,
In addition to the system program for the entire device, this ROM (23) stores, for example, a kana-kanji conversion program for the word processor function and dictionary data therefor, as well as a handwriting recognition program and dictionary data therefor. .

Also, (24) is RAM for working, (25)
is a backup RAM with a power supply (26).

Furthermore, (27) is a timer IC, which is also driven by the power supply (26) and counts the clock from the crystal oscillator (28) to constantly display the current date and time. Outputting time data.

The following will explain the connection relationship with each part shown in the perspective view of FIG. 3. First (29) is the display section (1)
This controller (29) is controlled by the CPU (21), and the display data created by the CPU (21) is transmitted through the display controller (29). -R
A M (30), and this written data is supplied to the display section (1) through the controller (29).

Furthermore, (31) is an interface circuit for an input tablet (2) and a pen (3) that are integrated with the display unit (1), and this interface circuit (31) is used to input data written on the input tablet (2). etc. are CPU (
21).

Further, (32) is a processing circuit for solid-state recording, in which the audio signal from the microphone (11) undergoes processing such as AD conversion, and is sent to the backup RAM (
25). Also backup RAM (25)
The audio signal data stored in D is processed by the processing circuit (32).
The signal is subjected to processing such as A conversion, and is supplied to the speaker (7) through the mixer (33).

Furthermore, (34) is a dialer circuit, and the CPU (21)
), when data such as an arbitrary telephone number is supplied, an acoustic signal corresponding to the so-called digital tone of a touch-tone telephone is generated, and this signal is supplied to the speaker (7) through the mixer (33).

Further, (35) is a key interface circuit, which includes the above-mentioned (5a) to (5d) and (6a) to (6d).
, (10) and (12), etc., are supplied directly or through the power supply circuit (36),
A predetermined converted signal is supplied to the CPU (21). In addition, the power switch (10) and key switch (6a)
Operation keys (1) except ~ (6d) and stop key (12C)
2) is supplied to the interface circuit (35) via the power supply circuit (36), and when these key switches are operated, the power supply circuit (36) is first activated, and then the key operation information is sent to the interface circuit (35). It grows so that it is supplied with food.

Furthermore, (37) and (38) are interface circuits for the IC card and external equipment during expansion, which are connected to the sockets (13) and (14), respectively.

In the electronic notebook device described above, data stored in the V-RAM (30) is retrieved by the CPU (21).
The case where the calculator processing is performed will be explained below.

First, the right side casing (
16) When the upper power switch (1o) is pressed, an icon (lcon: CR
Pictures used in place of letters in menus on the T screen) group (
40) is displayed.

Here, the report image (70) shown in FIG. 2A shows the last page used last time.

The operation of this example will be described below with reference to FIGS. 1 and 2. First, as shown in FIG. 2A, the tip of the pen (3) is brought down to the "Dentaku" icon (52) in the icon group (40) arranged above the report image (70). Furthermore, the active area of the pen (3) (line (7) in Figure 2A)
When pulled out to the area beyond 0a), the "Dentaku" icon (52) is enlarged as shown by the image frame (70b).

A calculator window (72) is displayed at a position away from the tip of the pen (3) in the image (70) as shown in FIG. 2B.

In this calculator window (72), there is an input information display section (72).
3), Memory display section (77) that displays the memory contents, Manual key group (78) for 100 million, 10,000, 100,000, and 100 digits, Numeric key group (76) that inputs numbers from 0 to 9, and decimal point. Decimal point key (75), ÷, x, -, +, %,
J″.

A calculation key (74) for performing calculations such as - and a group of cancel keys (71) are displayed. The display parts (73) and (77) of such a calculator window (72) show "0."
is displayed. In this way, using the various operation keys displayed in the calculator window (72), the computer enters a state of waiting for calculations such as the four arithmetic operations. (First step 5TY) Next, according to FIG. 2C and second step ST2 in FIG. For example, the third step S
As shown in T, check whether an error occurred due to overflow or not.
The PU (21) (see Figure 4) makes a judgment. If there is no error, proceed to the fourth step ST.

Then, other processing is performed, but there is an error “YE
In the state of "S", the process proceeds to the fifth step ST5, and a mark indicating the calculation result and error is displayed on the display section (73) as shown in the second diagram.
to be displayed. Next, as shown in the second diagram, all keys other than the clear key group are made selectable by changing the display so that all keys other than the mouth and key keys are shaded. In the second diagram, these non-selectable keys are shown with broken lines. At the next 7th step ST, the state of the second attempt is changed to wait for human power, and at the 8th step STa, the CPU (21) determines whether any of the dedicated keys in the clear key group (71) has been pressed. If “No”, the 7th step STi
However, if “YES”, the 9th step ST
, and if it is a key to determine whether the key touched by the tip of the pen [3] is a key, perform mouth processing in the calculator device (10th step), and the 9th step ST is a key. If not pressed, proceed to the next 11th step S
The processing within the calculator device corresponding to the function of the key is performed at T, , and the 10th and 11th steps ST, 0 and ST,
, After finishing, both proceed to the 12th step 5T12 and proceed to the 2nd-
As shown in 8, all the key groups are returned to the selectable state.

Here, the digit entry key (78) can be selected immediately from the state of "Oo" to 100,000,000,000,000,000,000,000,000,000,000,000,000.

Since it never goes to the hundreds place, it is in a state where it cannot be selected.

In this example, the calculator operates like a ridge, so if there is no point in pressing it when an error is displayed, all keys except clear 10 will not work, so that the user will not make unnecessary erroneous operations. A device is obtained.

In the above embodiment, a calculator device in which a calculator window is projected on the display is described, but in a calculator device or the like in which pressed keys are projected on a liquid crystal panel, it is possible to turn off the illumination of a portion of the suppressed key when the pressed keys are not selectable. The user may be informed that selection is not possible. Furthermore, by making it impossible to press using a general mechanical press key, etc., and flashing a light to indicate whether it is selectable or not selectable, an error message is displayed and keys other than the clear key cannot be pressed. It is clear that it may be specified that the pressure is meaningless, and that various changes can be made without departing from the gist of the present invention.

〔Effect of the invention〕

According to the calculator device of the present invention, once an error is displayed, all key operations other than the clear key are disabled and are visualized, making it possible to prevent user malfunctions in advance. .

[Brief explanation of the drawing]

FIG. 1 is a flowchart of an operation explanatory diagram showing an embodiment of the calculator device of the present invention, FIG. 2 is a screen diagram showing an embodiment of the screen state of the calculator device of the present invention, and FIG. 3 is a flow chart of the calculator device of the present invention. FIG. 4 is an external perspective view showing one embodiment of the housing of the device, and FIG. 4 is a system diagram showing one embodiment of the calculator device of the present invention. [1) is the display section, (2) is the input tablet section,
(3) is a pen, (21) is a CPU, (30) is a V-
RAM. (70) is a report image. Agent Hidemori Matsukuma D Screen 2nd column A (2)

Claims (1)

[Scope of Claims] A calculator device having numeric keys, arithmetic keys, and a clear key, comprising a detection means for detecting the occurrence of an error in calculation, and a means for making keys other than the clear key inoperable by the detection means. What is claimed is: 1. A calculator device comprising: a selection prohibition means; the calculator device is configured to change the state of the selection prohibition means to notify a user that the selection prohibition means has become inoperable.