JPS5837589B2 - Keisan Kinosou Sahoushiki - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a calculator having a power root calculation function.
The operating method is such that one key switch is provided to specify whether it is the digit root of a power root, and the power root can be easily obtained by operating the key switch for specifying what root it is and the power root key.

In general, the power root is expressed as nf, and tL,n takes a number of 2 or more, and if a dedicated key is provided for each n, the number of keys increases, and by using the power Y
The power root can be found by making

In view of the above-mentioned points, the present invention provides an operation method that eliminates the drawbacks, and will be described below with reference to an embodiment of the drawings.

Figure 1 shows a schematic configuration of this method, including a power root key (Ila-)px that specifies a power root and this power root key PK.
A selection switch S having a plurality of positions for specifying the root is provided in the vicinity of .

This selection switch S is composed of a rotary set of switches, and by rotating the knob D, the contact points can take multiple positions.
This embodiment shows a configuration that takes six positions.

The rotating shaft of the knob D has a display disc T that shows the status of multiple positions, and these six positions are numerical values 2, 3, 5, 7,
9. A disc T with a configuration in which n can be selected and its numerical value is displayed.
is indexed.

The indicator on the display disk T is such that the state of the selection switch S can be confirmed through a window W formed on the surface of the keyboard, for example.

In other words, the position of the numerical value below the window W matches the state of the selection switch S.

The relationship between the power root key PK and selection switch S is as shown in FIG. 2.

This FIG. 2 shows a switch SW that is opened and closed by operating the power root key PK, and a selection switch S that selects a routine by specifying whether it is a power root or the power root by closing the switch SW.

And the "2" position of the selection switch S is the routine of r,
The position "3" is the 3f routine, the "5" position is the 5f routine, the "7" position is the 7F routine, the "9" position is the 9ψ karoutine, "n" is the above numerical value r2J, r3
This is the position specified when J, r5J, r7j is other than "9".

In other words, since it is not possible to set any numerical value at the "n" position by operating the knob of the selection switch S, the configuration is such that this position is designated when a numerical value has not been set.

In the embodiment shown in FIG. 2, the selection switch S is in the designated position 3, and the switch SW for operating the power root key PK is closed to execute the 3ψ routine.

On the other hand, when the selection switch S is set to the rnJ position, the flow chart connected to "n" in FIG. 2 is executed.

That is, put the numerical value you want to open into the X register, operate the power root key PK, and put the logarithm into the X and Y registers.

Next, input the designation of the root into the X register by operating the specified number keys on the numeric keypad (the contents of the previous X register will be deleted), and then by operating the equal key, enter the Y register. The quotient of the contents of and the X register is calculated, the result is entered into the X register, and then IOX is executed and displayed.

FIG. 3 shows a flowchart of each of the routines f to 9f in FIG. 2. When the r routine is specified, 2 is input to the X register, and when 3f is specified, 3 is input to the X register.

Therefore, when a numerical value to be opened is entered in the X register and the power root key PK is operated, the logarithm of this logarithm is entered in the Y register and the root specified in the X register, for example, if I is specified, 2 is entered.

Then, the quotient of the contents of the Y register and the contents of the X register is calculated, the result is placed in the X register, and then 10x is executed and displayed.

FIG. 4 shows another embodiment, in which the selection switch S
A strobe signal is introduced into the input of the routine, and a signal discrimination circuit F discriminates which routine is specified.

In the above embodiment, the selection switch S was configured as a rotary set switch or could be configured as a slide switch, and was provided separately for the routines f, 3f, 5L7V', and 9f, but these It is also possible to use a method in which all of the ``Yx'' routines are used, and ``X'' is automatically generated (the number specified by the selection key) by pressing a dummy key or the like.

The key is to provide a power root key for specifying a power root, a selection switch that takes multiple positions for specifying what root it is, and a display means that displays the state position of the selection switch that takes multiple positions. The operation method is such that the desired power root can be obtained by specifying this and the power root key, and this makes it easier to take the reciprocal of There is no need for troublesome operations to specify, key operations are extremely simple, and the specified number, that is, the selection status of the selection switch, is also displayed to the user, indicating what is currently being executed when operating the power root key. It can be seen at a glance whether the device is in use or not, making it even more convenient to use.

[Brief explanation of drawings]

Figure 1 is a schematic diagram of the system of the present invention, Figure 2 is an explanatory diagram of the circuit configuration of the system, Figure 3 is a flowchart of each routine of the system, and Figure 4 is an illustration of another circuit configuration of the system. FIG. PK...Power root key, S...Selection switch, T...
...display disk, D...knob, W...window.

Claims (1)

[Claims] 1. In a calculator having a power root calculation function, a power root key for specifying a power root, a selection switch that takes multiple positions for specifying what root it is, and a display means that displays the state and position of the selection switch that takes multiple positions. A method of operating a computer in which a desired power root can be obtained by specifying a certain root using a selection switch and specifying a power root key.