JPS5938792A - Display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to display devices such as electronic desktop calculators and cash registers that can simultaneously display different types of information within the same display body.

<Prior Art> In recent years, for example, there has been a trend toward multi-functionality in electronic desktop calculators, and those with various arithmetic functions have been put into practical use.

However, in conventional display devices, there is no indication of what kind of calculation the displayed calculation information is based on, so it is difficult to recognize the type of calculation information being displayed. Confirming key operations has become extremely inconvenient on office electronic desktop calculators and the like.

<Object of the Invention> The present invention has been made in view of the above circumstances, and in particular, includes a numerical display component (for example, a display segment) and a symbol display component (for example, a display segment) representing the type of calculation information in the same display body.
It is an object of the present invention to provide a display device in which the display can be easily controlled by separating and correspondingly providing symbols (for example, symbol segments) for each digit.

<Embodiment> Hereinafter, an embodiment in which the present invention is applied to an electronic desktop calculator, such as an office calculator, will be described in detail with reference to the drawings.

FIG. 1 is a schematic block diagram showing the system configuration of the computer. Reference numeral 1 denotes an arithmetic processing unit (CPU), which mainly performs manual key control, display control, calculation, etc. C.P.U.I.
is composed of the following blocks. That is, 2 is CP
The clock signal φ generating section of U, 3, is a program memory consisting of a read-only memory (ROM).
4 is the program counter (PC), 5 and 6 are there.
The stack register 7 is a decoder that decodes the contents of the program memory 3 and generates a control signal.

8 is a data pointer, 9 is a memory (RAM) for storing calculation registers, flags, etc., 10 is an accumulator, 11 is a logic operation unit, 12 is an input port, 13 is an output port, 14 is a key human power section, 15 is the display section.

FIG. 2 shows the details of the display section, which includes, for example: a numeric display area A formed by a heat-emitting display tube, and a numeric display area A containing a plurality of numeric display segments for each digit for serially displaying calculation information; and includes a plurality of symbol display segments for each digit, arranged corresponding to the plurality of numerical display segments separated for each digit in this numerical display area A, and for displaying the type of calculation information. It consists of a type display area B of a plurality of digits, and is configured so that when a digit is selected, the numerical value and symbol display segments of the corresponding digit are driven to be displayed at the same time.

The symbols in the type display area B for displaying the calculation information corresponding to the numerical display area A are as follows. In other words, ・- is the approximate error display symbol, which lights up temporarily for an approximate error. AG is the average value calculation display symbol, which lights up during 1f-average calculation. SP is the selling price calculation display symbol, which lights up when the selling price J1 is calculated for markup or markdown calculation.

co is a cost calculation display symbol that lights up during cost calculation for mark amplifier or markdown calculations. For example, a numeric key,
If you operate the addition key, numeric key, and markup "MU" key, you will get c.

The symbol will be lit. GP is a profit amount calculation display symbol, which lights up when calculating the profit amount for markup or markdown calculation. NT is the after-surcharge or discount amount calculation display symbol, which lights up when calculating the after-surcharge or discount amount. %+ is a premium amount calculation display symbol, which lights up when the premium amount is calculated. %- lights up on the discount amount calculation display symbol when the discount amount is calculated.

This is the %C increase rate calculation display symbol, and lights up when the increase rate is calculated. %P is a distribution ratio calculation display symbol, which lights up during distribution ratio calculation. Each of the above display symbols lights up in red to improve visibility. In this way, by providing the numerical value display segment and the symbol display segment representing the type of calculation separately for each digit in the same display body, the display can be easily controlled. In other words, each digit segment is composed of, for example, a daily segment, a decimal point, a puncture union segment, and a symbol segment (various calculation display symbols mentioned above). Display control is performed by applying a display signal. The lid of the fluorescent 7J-s tube is covered up to the symbol segment. By controlling the symbol display at the same time as numerical display control in this way, the number of signals can be substantially reduced.
Therefore, even though the number of symbols for displaying symbols has increased, the number of display symbols has increased.

-There is an advantage that the tee does not decrease. Since one or more symbols are provided independently, there is no need to worry about the decoder or decoding process for displaying errors. For example, if an error symbol and another symbol are displayed at the same time, multiple The symbol /I/ can be displayed at the same time, and the meaning of calculation information (calculation results, etc.) can be displayed more accurately.

3 and 4 are flowcharts for explaining the present invention in detail. In Fig. 3, the display continues until the key is pressed (nI□ng), and first, in step n1, the display digit counter Jf10 is set, and then the j-1 digit of the X register where the calculation result is stored is set. Eye Xj-+
decodes the contents of and outputs a segment signal (n2
), the bit of the j−+ digit Z j−+ of the Z ratio (
In other words, one digit of the X register consists of 4 bits and 7 bits,
The 1st bit contains the data of the force/difficulty to turn on the puncture button, and the 2nd bit contains the decimal point data 7.
5; The third bit stores the symbol/L/total lighting status. ), that is, in this case, 3B.
If the corner is set to 1-, a segment signal is output to light up the status display symbol Lzf for the J-1 digit day (n3). If j is not 0, the reset signal for the 1-digit day is set to 0FFL, and the grid signal for the j-1-digit day is turned on, thereby ending the display of the 1-digit day and starting the display of the j-+ digit H. Decrement j by one (n6 to n8). j=0
The above operation is repeated until j=0, and when j=0, all sign digits (display symbols -) are displayed and one display of IkunoV is completed (n,). Calculations are performed according to key operations, and the calculation results are stored in the X register. A status display hook that displays the type of calculation information is set/reset in accordance with the calculation. FIG. 4 illustrates the calculation contents and cent/reset of the status display hook when a single key operation is performed after a numeric key operation, an X key operation, a numeral operation, and a Φ key operation to obtain additional support. At this time, the EX register has already stored the result of the % multiplication, and the Y register has the first 11
1? The numbers are stored. In Figure 4, Stenov.

ml resets all status display flags, then calculates and stores the extra hindsight in the X register, and clears the Y register (m2). If an estimation error occurs in the above calculation, the flag Eg is set, and the estimation error symbol (=) is then lit. n3. m4').

The nt flag is set, and later the nt flag /I/(N, ) for displaying premium or discount deferred calculation is lit (■η5).

child! Returning to Figure 3 again, the status display flag 1 hint 1
-/Each digit Z of the X register according to the reset: (i-0 ~
The third bit of 9) is reset (nl,
〜n3□). Therefore, the status display flag will be explained as follows.

The flag Eg is temporarily set during the estimated error and is used to light up the estimated error display symbol yv (□-). Dimensions~゛a
is set from 1 to 1 when calculating the average value, and is used to light up the average value J calculation display number button # (AG). In addition, Ap is set when calculating the selling price in mark amplifier or markdown calculation, and is used to light the selling price calculation display symbol /v (Sp). CO is set during cost calculation for markup or markdown calculation, and is used to light up the cost calculation display. g
p is set when calculating the profit amount in markup or markdown calculation, and is used to light up the profit amount calculation display symbol (Gp). n is set when calculating the premium or discount, and is used to light up the display symbol for calculating the premium or discount. Similarly, KPt is a flag used to light up each calculation display symbol of the form %(-1P-, -1Pc, %C, and %P.

As described above, the present invention is designed to meet the needs of electronic desktop calculators, etc., where it is necessary to be able to easily understand the display contents, especially those with complex functions, such as electronic desktop calculators. It is an effective means and is easy to implement.

C) <Shizuku° Myoka> As explained above, according to the present invention, it is possible to easily recognize what kind of calculation the displayed calculation information is based on, and it is possible to confirm key operations. . Further, since the symbol display control representing the type of calculation is performed at the same time as the numerical display control, the display control is simplified, and the display drive circuit is also simplified accordingly, making it possible to provide an inexpensive and compact device.

[Brief explanation of drawings]

Fig. 1 is a system configuration block diagram of an example of the 'ili Senni Tojo computer that incorporates the display device of the present invention, and Fig. 2 is a diagram showing an example of the display section used in the computer. - Figures 3 and 4 are diagrams for explaining the operation of the present invention. 1:cPtJ3:ROM9:RAM

Claims (1)

[Scope of Claims] 1. A multi-digit numerical display area including a plurality of numerical display components for each digit that serially display calculation information within the same display body, and a numerical display area for each digit in the numerical display area. a plurality of digit type display areas including a plurality of symbol display components for each digit for displaying the type of the calculation information and arranged corresponding to the plurality of numerical display components separated into the plurality of numeric display components; . A display device comprising means for displaying a symbol displaying component of a digit corresponding to a numerical displaying component of a predetermined digit in ml by a display selection signal when selecting a digit.