JPS6022431Y2 - Electronic calculator with impedance calculation function - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to an electronic calculator equipped with a synthetic leather impedance calculation function, and in particular, by providing an electric circuit diagram corresponding to the selected program for each selected position of the program selection switch. , which allows for extremely smooth program selection.

BACKGROUND OF THE INVENTION Conventionally, devices have been provided in which various calculation programs are stored in an electronic calculator and the calculations can be easily performed by selecting the - option of the stored program.

However, this type of system has a problem in that when selecting a program, the number or name of the program is entered manually using keys, making the selection operation complicated.

In particular, in the case of programs for calculating composite impedance, the content of the program, that is, the electrical circuit diagram, cannot be recognized simply from the number or name, making it difficult to select a program very smoothly.

Purpose The present invention was developed in view of these conventional problems, and is a very practical impedance device that allows the program to be selected by selecting the electrical circuit diagram displayed when selecting a program. The purpose is to provide an electronic calculator with calculation functions.

Example Hereinafter, the present invention will be described in detail based on examples.

Generally, a circuit configuration consisting of R, L, and C can be as shown in Figure 1, but here we will explain the case where R, L, and C are connected in series, as shown in Figure 1. .

Now, if the combined impedance and phase angle of the circuit shown in FIG. 1 are IZl, φ, R, L, C.

f (where f is the frequency of the current flowing through the circuit) is set to 1z1. A key operation method for determining φ is shown in FIG. 2, and a flowchart and bird configuration for realizing the same are shown in FIGS. 3 and 4.

First, the explanation of FIG. 2 will be as follows.

Use the special key (classification key) required for impedance calculation, ■9 times 5 countries to register the resistance, impedance, capacitance, and frequency of the current flowing through the circuit, respectively, in registers M□, M2. After placing the number in M3゜German,
By operating the program calculation execution start command key M, the synthetic leather impedance and phase angle of the circuit 1z1. Find φ and store the respective values in registers X and M□.

Here, register X is a display register, and by operating the X0M□ contents exchange key field, the contents of register X and register M1 can be exchanged, and the values of Izl and φ can be displayed alternately.

Next, a flowchart for realizing this key operation method is shown in FIG.

As is obvious at first glance, Fig. 3 shows ID, field, times.

By operating each key on the pendant, the value read in register 1 of 1=渥+(WL宍弥・φ=jan−”((WL− Saturday)/R) is obtained, and each of them is stored in the register XtMi.

The Matata key is a key for exchanging the contents of registers X and M□.

Finally, FIG. 4 shows the hardware configuration for realizing the key operation method and flowchart described above.

In Fig. 4, 1 to 3 are each 1: a group of registers for calculation;
2: memory register group, 3: arithmetic circuit.

The FP is a fixed storage device that stores multiple types of programs for calculating synthetic leather impedances of multiple types of electric circuits.

Furthermore, a to 1 are micro-controllers for opening each gate.
However, gates between operation registers are omitted (i.e., transfers between operation registers and clear o+
It is assumed that x, x +w, x +z, etc. can be performed freely.

). The relationship between the instructions in FIG. 3 and the micro-orders in FIG. 4 is shown in Table 1 below.

Also, depending on the fixed program, 1z1. When calculating φ, when performing each operation, the necessary micro-order appears each time, ■→X or X→M+ (i = 1, 2.3.4)
121, and the value of φ is calculated by the arithmetic circuit.

In the above, we have explained the case of calculating the composite impedance and phase angle of the electric circuit shown in Fig. 1 as an example.
Similarly, programs for calculating the synthetic impedance and phase angle of the electrical circuits shown in FIG. The configuration is such that the program can be selected and instructed.

FIG. 5 is a plan view showing the external appearance of the electronic desk calculator of this embodiment, in which K is the keyboard and D is the display section.

Further, S is a slide switch for specifying program selection, and by switching the slide switch S for specifying program selection, one of the plurality of programs stored in the fixed storage device FP is specified.

After specifying one program by switching the slide switch S for program selection specification, enter the value of each circuit element and the frequency of the current flowing through the circuit by using the same key operations as described above, and then issue a command to start program calculation execution. By pressing the 4□ key, calculations based on the specified program are executed to determine the values of synthetic leather impedance and phase angle.

Further, as shown in the figure, an electric circuit diagram corresponding to the selected program is provided near the slide switch S by printing or by pasting a transparent plate on which the circuit diagram is printed.

Therefore, the designated program can be clearly seen at a glance, and the program can be selected very smoothly.

In addition to finding the synthetic impedance of each circuit,
Regarding the value of C when R, L, f, and 12+ are known, R when Aruiha, L, C, f, and 1z1 are known.
It is also possible to obtain the value of by adding or changing the fixed program.

Effects As explained in detail above, the electronic calculator with impedance calculation function of the present invention allows the desired calculation program to be selected based on the displayed electric circuit diagram, so that the program selection operation can be performed quickly and accurately. is possible,
Very practical.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram showing various electric circuits made up of resistors, coils, and capacitors, and Fig. 2 shows a key operation method in an embodiment of the present invention and the registers that change in relation to the key operation. 3 is a flowchart for explaining the embodiment, FIG. 4 is a block circuit diagram showing the bird configuration of the embodiment, and FIG. 5 is a plan view showing the external appearance of the embodiment. Symbol FP: Fixed storage device, slide switch for specifying S nib program selection, K: Keyboard, In, L+, [m
: Classification key ■ Nibragram calculation execution start command key,
1: Operation register group, 2: Memory register group, 3:
Arithmetic circuit.

Claims (1)

[Scope of utility model registration request] An electronic calculator that stores multiple types of programs and selects and executes the desired program in order to calculate the composite impedance of multiple types of electric circuits configured by appropriately connecting circuit elements such as resistors, coils, and capacitors. And,
It comprises a program selection switch means for selecting - of the plurality of programs, and an electric circuit diagram display section that displays an electric circuit diagram corresponding to the program in correspondence with each selection position of the switch means. An electronic calculator with an impedance calculation function.