JPH09120415A - Parts display method and parts selection support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively select and decide a real parts which can satisfy the economical request by displaying the real parts names and their unit price information in a list and also displaying the total number of parts and the comparison result of a comparison process. SOLUTION: A real parts decided in a selection display range is extracted out of a parts database with input of a trial unit price, and the cost of the parts and the cost decided by the trial unit price are calculated. The parts included in a selected display range are displayed in every item through the switching of display, and the cost decided by the trial unit price and the purchasing price (contact) is displayed. When a parts number key output button is clicked, the parts included in the display range of a cost study table 24 are sorted in every parts number and in the order of higher prices. Then this sorting result is displayed. When a parts is selected by a cursor and an information list button is clicked, the parts of specifications similar to the selected parts are displayed on a parts information list screen 25 in the order of lower costs. When a graph button is clicked, the contracted cost, the trial price cost and the target value are displayed in a bar graph, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supports a part display method for displaying a list of real parts determined on a display screen so that real parts determined by a designing device to meet specifications and connection relationships and a real part are selected. The present invention relates to a component selection support device.

[0002]

2. Description of the Related Art For example, in the development of electric products, CAD
After designing an electronic circuit using a system etc. and determining the specifications of circuit parts (an example of constituent parts) and their placement on the circuit diagram, the specific electronic parts actually used corresponding to the circuit parts ( There is work to determine an example of actual parts. Conventionally, in the work of determining such an actual part, each designer searches a catalog in which the corresponding actual part is posted, and finds an appropriate actual part satisfying the desired specifications from the found catalog. You have selected.

[0003]

When selecting and deciding an actual part from such a catalog, since the search range is limited, the optimum actual part is not always selected and decided. This consumes time and causes a deterioration in the efficiency of circuit design. Therefore, as a system that can efficiently select and determine real parts, part classification information that classifies real parts based on hierarchically set parameters of multiple stages and reference information (technical information and material information) about each parameter value A system for supporting the selection and determination of parts by using a parts database storing therein is proposed (Japanese Patent Application No. 6-2738).
No. 73). In this system, it is possible to narrow down the actual parts and determine the actual parts satisfying the specifications of the constituent parts by repeating the operation of selecting the parameter set hierarchically and selecting the parameter value in the parameter. Further, when selecting the parameter value, detailed reference information regarding the parameter value is called and the part can be selected while referring to it, so that the actual part can be almost deterministically determined when the parameter value of the final parameter is selected. With such a selection and determination system, it is possible to efficiently select and determine an actual part that substantially satisfies the specifications and quality.

In this kind of selection and decision work, it may not be sufficient to select and decide an actual part that satisfies the specifications and quality. That is, since the cost of the product is often an important factor in selling the product, it may be necessary to consider the economic requirements such as the component cost when the selection of the actual component is decided. However, the selection determination system cannot determine whether or not the determined actual parts satisfy the economic requirements. Therefore, even if the actual parts are determined, it is necessary to separately perform economic calculation (cost calculation) in order to determine whether or not the product using the determined actual parts satisfies the economic requirements.

Further, as a result of performing the economic calculation, when the economic requirements are not satisfied, it is necessary to read out the material information of the determined real part again and select the real part again with reference to it. An object of the present invention is to make it possible to quickly determine whether or not the determined actual component satisfies the economic requirement.

Another object of the present invention is to make it possible to efficiently select and determine a real part that can meet economic requirements from a large number of real parts.

[0007]

According to a first aspect of the present invention, there is provided a method of displaying a list of real parts, which are determined by a designing device so as to be suitable for a component having a specification and a connection relation. Therefore, it includes a reading process, a quantity calculating process, a total calculating process, a comparing process, and a first displaying process. The reading step is a step of reading the product name information and unit price information of the actual part determined from the part database storing the attribute information including the product name information, unit price information and specification information for each actual part. The quantity calculation step is a step of calculating the quantity of each determined real component based on the connection information of each component determined by the design device. The total calculation process is based on the calculated quantity and the unit price information of the actual parts read out.
This is a process of calculating the amount information of each determined real part and calculating the total. The comparison step is a step of comparing the calculated total with a preset target total. The first display step is a step of displaying the determined product names of the actual parts together with the unit price information on the display screen, and displaying the total and the comparison result in the comparison step on the display screen.

Here, since the total and comparison results are displayed on the display screen together with the list display of the determined actual parts, whether or not the economical requirement is satisfied when the product is manufactured by the determined actual parts is prompt. Can judge. The component display method according to claim 2 is the method according to claim 1, further comprising a display range designating step of designating a display range of the determined real component on the display screen before the reading step, and the reading step, The product name information and unit price information of the parts within the range specified in the display range specification step are read from the parts database. In this case, since the display range is designated, the cost of the noteworthy component can be easily grasped.

The component display method according to claim 3 is the method according to claim 1.
Alternatively, in the method described in 2, the connection information is divided into predetermined groups, and the method further includes a subtotal calculation step of calculating a subtotal of the amount information of each group, and in the first display step, the subtotal calculated in the subtotal calculation step. Is also added and displayed. In this case, since the subtotal for each group is displayed, the cost for each group can be easily grasped.

The component display method according to claim 4 is the method according to claim 1.
The method according to any one of 1 to 3, further including a rearrangement step of rearranging the real parts displayed on the display screen so that the amount information thereof is arranged in a predetermined order, and the amount information is added in the first display step. Are displayed in the order sorted in the sorting step. In this case, since the price information is displayed in a predetermined order, it is possible to easily grasp the economical weight of the actual parts in the product, and efficiently select the actual parts that satisfy the economic requirements from among the many actual parts. You will be able to select and decide.

The component display method according to claim 5 is the method according to claim 1.
In the method described in any one of 1 to 4, on the display screen, the actual parts having substantially the same specifications as the determined actual parts are read from the parts database with reference to the specification information, and the unit price information is arranged in a predetermined order. The method further includes a second display step of displaying a window on. In this case, since the actual parts having substantially the same specifications as the actual parts are displayed in the order of unit price information, it becomes possible to efficiently select and determine an actual part that can satisfy the economical requirement from a large number of actual parts.

A parts display method according to a sixth aspect is the first aspect.
5. The method according to any one of 1 to 5, further including a trial unit price receiving step of receiving the input trial unit price of the determined actual part, and the total calculating step includes each trial part based on the trial unit price and the quantity in addition to the amount information. Of the trial amount information is calculated and the total is calculated. In the comparison step, the total of the trial amount information calculated in addition to the comparison is compared with the target total, and in the first display step, in addition to the display. The total trial amount information and the comparison result in the comparison process are displayed on the display screen. Here, not only the total based on the unit price stored in the parts database and the comparison result thereof but also the total based on the trial unit price and the comparison result are displayed, so that the simulation for approaching the target value can be easily performed.

The component display method according to claim 7 is the method according to claim 1.
In the method according to any one of 1 to 6, a component selecting step of accepting the selection of the actual component displayed on the display screen, and a component redetermining step of redetermining the actual component accepted in the component selecting step as a component to be used. It also includes and. Here, when an actual part that satisfies the economical requirements is selected, the constituent parts are re-determined for the actual part, so that it is possible to easily determine the parts that reflect the economical requirements.

The component selection support device according to claim 8 is a device for assisting in the selection of an actual component that is determined by the designing device so as to match a component whose specification and connection relationship are defined, and the component database storage means. A read means, a total calculation means, a target value setting means, and a display means. The component database storage means stores attribute information including unit price information and specification information of actual components for each actual component. The reading means reads the item name information and the unit price information of the actual part determined from the part database storage means. The total calculation means calculates price information from the determined unit price information and quantity of the actual parts, and calculates the total. The target value receiving means receives the total target value. The display means displays on the display screen the product name information of the determined actual part, the unit price information thereof, the total calculated by the total calculation means, and the total target value accepted by the target value acceptance means and the difference between the totals. indicate.

Here, since the total and the difference between the total and the target value are displayed together with the list of the determined actual parts, the economical requirement is satisfied when the product is manufactured by the determined actual parts. You can quickly determine whether or not.
The component selection support device according to claim 9 is the device according to claim 8, further comprising rearrangement means for rearranging the real components displayed on the display screen so that the amount information thereof is arranged in a predetermined order, and the display means is , The amount information is added and displayed on the display screen in the order sorted by the sorting means. In this case, since the price information is displayed in a predetermined order, it is possible to easily grasp the economical weight of the actual parts in the product, and efficiently select the actual parts that satisfy the economic requirements from among the many actual parts. You will be able to select and decide.

According to a tenth aspect of the present invention, there is provided a component selection support device according to the eighth or ninth aspect, further comprising display range designating means for designating a display range of the determined real component on the display screen, and the reading means. The unit price information of the actual part designated by the display range designation means is read from the component database storage means. In this case, since the display range is designated, the cost of the noteworthy component can be easily grasped.

According to an eleventh aspect of the present invention, there is provided the component selection support apparatus according to any one of the eighth to tenth aspects, wherein the content stored in the component database storage means is updated based on the material information indicating the usage record. In this case, since reliable information is always stored in the component database storage means, the quality can be improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a component selection support system used for implementing a component display method according to an embodiment of the present invention. In FIG. 1, the component selection support system has an arithmetic processing unit 1 that supports component determination and optimization of the determined component. The processor 1 is an LA
It is connected to a parts database 3, a circuit diagram designing device (circuit CAD) 4 and a purchasing database 5 by a communication line 2 such as N.

The arithmetic processing unit 1 is composed of, for example, a workstation, and includes an MPU, RAM, ROM,
It includes an I / O interface and various drivers. The arithmetic processing unit 1 includes a keyboard 10, a mouse 11, a communication interface (I / F) 12, a CRT display 13 for display, and an external storage device (DIS).
K) 14 is connected. In the external storage device 14,
A component display program for carrying out an embodiment of the method of the present invention is stored. The communication interface 12 is connected to the communication line 2.

The parts database 3 includes parts classification information in which various actual parts are classified based on a plurality of hierarchically set parameters, and technical information (specification information) and material information (stocking) regarding parameter values of each parameter. Reference information such as unit price) and manufacturing information (usage history) is stored. Of these, the material information is regularly updated by the purchasing database 5 at an appropriate timing.

The parts classification information in the parts database 3 is, for example, parameters S1 to S8 as shown in FIG.
It is set in 8 levels. The parameter S1 of the first layer is the electromechanical classification, and here, the parts are roughly classified into functional elements such as a resistance element, a capacitive element, a connection part, and a diode. In the parameter S2 of the second layer, if the function-specific element is a resistance element, a small carbon film resistance,
It is also divided into parts categories such as collective resistance and surface mount resistance. The parameters S3 to S6 of the third to sixth layers are set to those corresponding to the component categories of the parameter S2. As shown in FIG. 3, when the component category is small carbon film resistance, the parameters S3 to S6 are set.
Is set to the manufacturer, series, withstand voltage, and resistance value. The parameters S7 and S8 of the seventh and eighth layers are
Irrespective of the component category, it is set to the identification number such as the mounting method and the packaging method. Each of these parameters S1
The parameter S1 can be specified so that the part number that satisfies the specifications can be specified by sequentially selecting the parameter values of
~ S8 is set.

Further, as reference information in the parts database 3, technical information, material information, manufacturing information and the like as shown in FIG. 4 are set for each parameter value. For example, as technical information, information such as voltage, current, electric power, withstand voltage, operating voltage, etc., and as material information, material unit, purchase unit price,
Information such as product name and adoption record is stored. Manufacturing information includes P board (printed circuit board) symbol name,
Information such as a layout surface possible code and a mountable format is stored.

Next, an implementation procedure of one embodiment of the method of the present invention will be described with reference to the control flowcharts shown in FIGS. When the parts display program is started, initialization is performed in step P1 of FIG. here,
Various flags and RAM are set to initial values. In step P2, the selection and input of the model to be displayed is waited for. The operator inputs the name of the model using the circuit diagram designed by the circuit diagram designing device 4. Here, it is possible to input a plurality of model names.

In step P3, it is determined whether or not the parts determination support process is designated. When the circuit design is completed, the operator usually decides the actual parts to be actually used that satisfy the technical specifications for the constituent parts decided on the circuit diagram. The process that supports this decision work is the component decision support process. In step P4, it is determined whether the cost review process has been designated. After determining the actual parts, the operator usually specifies this process in order to determine whether the determined actual parts are economically valid as well as the technical specifications. If the cost review process is not designated, it is determined whether or not a termination command has been issued. When the end command is not issued, the process returns to step P2, and when the end command is issued, the process ends.

When the component decision support process is designated, the process proceeds from step P3 to P6. In the component decision support process of step P6, the circuit diagram is called from the circuit diagram designing device 4, and as shown in FIG. 7, necessary parts are displayed on the circuit screen 20 partitioned on the CRT display 13. Then, the component to be determined is selected by designating the component on the circuit diagram displayed by the pointing device such as the mouse 11. In addition to the component determination screen 21, the CRT display 13 can also display a parameter value screen 22 and a reference information display screen 23 for displaying technical information, material information, and the like. Here, a specific example of the component determination screen 21 and the parameter value screen 22 is shown in FIG. The display of these screens can be displayed / erased as necessary, and the display position can be set arbitrarily.

By selecting a component with the mouse 11, the component category, that is, the parameters S1 and S2 are automatically set. In FIG. 8, even the element category of the capacitor is set in a fixed state. Then, the parameters S3 to S6
To be set sequentially. In the example of FIG. 8, since the component category is the ceramic capacitive element, the parameters S3 to S
6, the manufacturer, series name, withstand voltage, and electrostatic capacity are selected and set by the operator. Here, when any one of the parameters S3 to S6 is selected, a pair of parameters S3 and S4, S5 and S6, and S7 and S8 are set as a set on the parameter value screen 22, and the parameter values are displayed in a matrix on the screen. . In FIG. 8, the parameter S5
As a result, the parameter values of the withstand voltage and the capacitance of the parameters S5 and S6 are displayed in a matrix. Regarding the display of this parameter value, those existing in the parts database 3 are displayed with "*", and further, those parts having a track record are displayed to that effect. Then, the actual component is determined by sequentially determining the parameter value on the parameter value screen 22. At this time, technical information or material information may be referred to. In this way, when the actual component is determined, the finally determined component product number (actual component model number) is displayed in the element product number column of the component determination screen 21. When this operation is repeated for all the parts on the circuit diagram, the actual parts are determined for all the parts.

When the parts determination is completed and the cost review processing is designated, the process shifts from step P4 to P7. Step P7
Then, the cost review process shown in FIG. 6 is performed. Here, in step P11 of FIG. 6, as shown in FIG. 9, the cost review screen 24 is provided next to the circuit screen 20 of the CRT display 13.
Is displayed. Specific examples of the cost review screen 24 are shown in FIGS. 10 and 11. Here, four selection boxes for selecting the display range of the model name, circuit name, board name, and block name are displayed on the upper left side of the screen, and the manufacturing plant, manufacturing line, and target value are displayed on the upper right side. ing. Further, in the central portion of the screen, information such as a circuit number, a product number (element product number), a mounting category, a standard, a unit price, and the number of actual parts in the selected display range is displayed for each circuit, board, and block.

Here, the mounting classification is axial (A),
It is divided into three types: random (R) and chip (C). Further, in the standard column, "○" indicates a standard product, that is, a part that has a track record and is standardly used as a standardization target part, and "△" is registered in the parts database 3 and is a standardization target part. Parts that are parts but are not standardly used are shown, and "-" indicates parts that are registered in the parts database 3 but are not standardized. In addition, "Contract" in the unit price column is the price (purchase cost) at the time of actual purchase, and "Trial" is an easy amount of money that seems to be able to be purchased even with parts that have no track record or parts with a track record. Is. This trial amount can be input at any time. In addition, "End", "Save",
"Product number key output", "circuit number output key", and buttons for various operation commands such as "information list", "graph", "PC output" are displayed at the bottom of the screen. Here, the "output product number key" button is a button for sorting and outputting the devices with the highest price using the device product number as a key. Further, the "graph" button is a button for displaying the cost in a graph for each model. The “information list” button is a button for displaying alternative parts having specifications equivalent to the selected part in order of cost.

In step P12, the unit price (purchase cost) of all parts determined for each model is read from the parts database 3, the number of actual parts is determined from the connection relation determined by the circuit diagram designing device 4, and read. From the unit price and the calculated number of actual parts, the total price (cost) of parts for each model is calculated. In Step P13, the input of the target value of the cost is accepted, and the total calculated from the accepted target value is subtracted. That is, the calculation for comparing the cost and the target value is performed.

On the other hand, when the cost review screen is displayed, the operator drags one of the selection boxes to select the display range. When the selection box is dragged, a selection item box 24a corresponding to the selected selection box is displayed in a window as shown in FIG. The operator sets the cursor to the selected item and releases the click button of the mouse 11 to determine the display range. FIG. 11 shows a state in which the board Board1 is selected in the selection item box 24a by dragging the board selection box.

In step P14, it is determined which display range has been selected. In Step P15, it is determined whether or not the "output product number key" button on the upper right of the screen is clicked. In Step P16, it is determined whether the "information list" button has been clicked. When the operator wants to know an alternative part, the operator places the cursor on the part and clicks this button to display a list of alternative parts.

In step P17, it is determined whether the "graph" button has been clicked. In Step P18, it is determined whether another button, screen deletion, another process such as another command, or the like is designated. In Step P20, it is determined whether or not an end command has been issued. Whether there is a termination command,
It is judged by clicking the "End" button or opening another screen. If the end command has not been issued, the process returns to step P12, and if the end command has been issued, the process returns to the main routine.

When the display range is selected, step P14
To P21. In Step P21, it is determined whether or not the trial unit price has been input. If it is determined that the trial unit price has been input, the process proceeds to step P23, all the actual parts for which the selected display range is determined are extracted from the parts database 3, the cost thereof is calculated, and the cost based on the trial unit price is also calculated. . If the trial unit price has not been input, the process proceeds from step P21 to step P22, and all the actual parts for which the selected display range is determined are extracted from the parts database 3 and the cost is calculated. In Step P24, the display is switched so that the parts in the selected display range are displayed item by item. Further, the cost based on the trial unit price calculated in the display range and the cost based on the purchase unit price (contract) are displayed. Further, the difference between the cost per model and the target value is displayed. As a result, the operator can instantly determine whether or not the determined actual part is economically valid.

For example, FIG. 10 shows a case where the entire model is selected, in which case the cost and target value of the entire model are displayed. In addition, the amount of money by the purchase unit price (contract) and the amount of money by trial are displayed. As a result, it is possible to easily perform a simulation as to what kind of parts should be used to bring the cost to the target value. In addition, FIG.
Shows the case where the block A is selected, and the cost of the block A is displayed. For example, when the cost of the entire model exceeds the target value, which block or board is higher can be easily confirmed by selecting the block or board. Therefore, the cost can be studied efficiently by confirming the cost in order from the highest block or the board and inputting the trial unit price for the actual part. For example, in the example shown in FIG. 10, the block C has the highest cost.

When the "product number key output" button is clicked, the process moves from step P15 to step P25. In Step P25, the parts in the display range of the cost review table 24 are sorted by product number in descending order of price. This concrete example is shown in FIG.
It is shown in FIG. Here, the sorting result when the block C with the highest cost is selected as the display range is shown.
In Step P26, the sorting result is displayed. In this way, by sorting with the product number as a key, it is possible to know at a glance which part of the product number is used most and the cost is affected, and the cost review work can be smoothly carried out.

When a part is selected by the cursor and the "information list" button is clicked, the process moves from step P16 to step P27. In Step P27, the parts having the same specifications as the part selected by the cursor are displayed on the parts information list screen 27 in the order of low cost. In FIG. 12, on the component information list screen 25, resistors having the same specifications as the product number “resist222” are displayed in the order of lowest unit price. The operator can re-determine the component in the component determination support process with reference to this screen.

When the "graph" button is clicked, the process moves from step P17 to step P28. Step P
At 28, the contracted cost, the trial cost, and the target value are displayed for each model on the screen by, for example, a bar graph as shown in FIG. At this time, the two costs are displayed separately for each substrate. When another process is designated, the process proceeds from step P18 to step P29, and the other designated process is executed. It should be noted that in these flowcharts, the processing is described as if there is a priority order for convenience of description, but these processing does not have a priority order. Further, as the layout of the screens is generally performed in Windows (trademark) or Mac (trademark) OS, when an active screen is selected, other screens are arranged on the back surface.

Since the total cost and the difference from the target value are displayed here, the parts can be quickly selected in consideration of the economical aspect. Further, since subtotals for each predetermined group such as a board and a block can be obtained, it is possible to easily grasp the cost for each group. Further, since a list screen of parts having the same specifications is displayed in order from the lowest cost, it is possible to quickly select the optimum part by considering both technical specifications and economical aspects.

[Other Embodiments] (a) As shown in FIG. 14, if the item number column is selected by double-clicking the mouse 11, for example, after changing the actual parts in the cost review table, the actual item number selected is changed. A component determination screen may be displayed and the displayed actual component may be redetermined as the component to be used. At this time, a list of component information may be further displayed, and the re-determined actual component may be re-determined again. The processing procedure in this case is shown in FIG. Here, in step P19, when the cursor is in the part number column, the item is double-clicked, and when it is determined that the actual part is selected on the cost review table screen 24, the process proceeds to step P30, and the part part number determination screen similar to step P6 in FIG. 5 is displayed. 21
Is displayed and the component determination process is performed. The other processing is the same as the processing shown in FIG. 6, and description thereof will be omitted. The information of the re-determined actual component of this result is sent to the circuit diagram designing device 4 and the like and the component information there is also updated, whereby the unified management of the component becomes possible. (B) In the above-mentioned embodiment, an electric component has been described as an example.
The present invention can also be applied to support the selection of piping parts and other parts. (C) In the above-described embodiment, the arithmetic processing device is connected to the circuit diagram designing device online, but it may be operated alone or offline.

[0040]

As described above, according to the present invention,
Since the total and comparison results are displayed on the display screen together with the list of the determined actual parts, it is possible to quickly determine whether or not the economical requirements are satisfied when a product is manufactured using the determined actual parts. Further, since the display range is designated, the cost of the noteworthy component can be easily grasped.

Further, since the subtotal for each group is displayed, the cost for each group can be easily grasped. Further, since the amount information is displayed in a predetermined order, it is possible to easily grasp the economical weight of the actual parts in the product, and to efficiently select and determine the actual parts that satisfy the economic requirements from a large number of actual parts. Like

Further, since the actual parts having substantially the same specifications as the actual parts are displayed in the order of unit price information, it becomes possible to efficiently select and determine the actual parts which can satisfy the economical requirement from a large number of the actual parts.

[Brief description of the drawings]

FIG. 1 is a block diagram of a parts selection support system used for implementing the method of the present invention.

FIG. 2 is an explanatory diagram of parameters set hierarchically.

FIG. 3 is an explanatory diagram showing an example of parameter names set for each component category.

[Fig. 4] Illustration of reference information

FIG. 5 is a control flowchart of a main routine of the parts selection support system.

[Fig. 6] Control flowchart of cost review processing

FIG. 7 is a diagram showing an example of a display screen.

FIG. 8 is a diagram showing an example of a display of a part part number determination screen.

FIG. 9 is a diagram showing an example of a display screen.

FIG. 10 is a diagram showing an example of display of a cost review table screen.

FIG. 11 is a diagram showing an example of display of a cost review table screen.

FIG. 12 is a diagram showing an example of display of a cost review table screen.

FIG. 13 is a diagram showing an example of a graph processing display.

FIG. 14 is a diagram showing an example of a display according to another embodiment.

FIG. 15 is a flowchart corresponding to FIG. 6 of another embodiment.

[Explanation of symbols]

 1 arithmetic processing device 3 parts database 4 circuit diagram design device 5 purchasing database 11 mouse 13 CRT display

Claims (11)

[Claims] 1. A parts display method for displaying on a display screen a list of actual parts that are determined by a designing device so as to be compatible with the constituent parts for which specifications and connection relationships have been determined, and product name information and unit price for each actual part. A read step of reading the item name information and unit price information of the determined actual part from a component database storing attribute information including information and specification information, based on connection information of each component determined by the design device, A quantity calculation step of calculating the determined quantity of each actual part, and the calculated quantity and the unit price information of the read actual part, calculates the price information of each determined actual part, and A total calculation step of calculating a total, a comparison step of comparing the calculated total with a preset target total, the product name information of the determined actual parts, together with the unit price information thereof, the table And displays a list on the screen, component display method comprising: a first display step of displaying on said display screen a comparison result in the total and the comparative process. 2. A display range designating step of designating a display range of the determined real part on the display screen before the reading step, further comprising a display range designating step in the reading step. The component display method according to claim 1, wherein the product name information and unit price information of the components in the range are read from the component database. 3. The connection information is divided into predetermined groups, and further includes a subtotal calculation step of calculating a subtotal of the money amount information for each group, wherein the first display step is calculated in the subtotal calculation step. 3. The component display method according to claim 1, wherein the subtotal is additionally displayed. 4. The method further includes a rearrangement step of rearranging the real parts displayed on the display screen so that the amount information thereof is arranged in a predetermined order, and in the first display step, the amount information is added to the rearrangement step. Displayed in the order sorted by.
Part display method described in any one of. 5. A real part having substantially the same specifications as the determined real part is read from the parts database with reference to the specification information, and a window is displayed on the display screen so that the unit price information is arranged in a predetermined order. The component display method according to claim 1, further comprising a second display step of displaying. 6. The method further comprises the step of accepting the trial unit price of the determined part, wherein in the total calculation step, trial price information of each actual part is calculated based on the trial unit price and the quantity in addition to the price information. And in the comparison step, in addition to the comparison, compares the calculated trial amount information total with the target total, and in the first display step, in addition to the display, the trial amount. The component display method according to claim 1, wherein the total of information and the comparison result in the comparison step are displayed on the display screen. 7. A component selecting step of accepting the selection of the actual component displayed on the display screen, and a component redetermining step of redetermining the actual component accepted in the component selecting step as a component to be used. The component display method according to any one of claims 1 to 6. 8. A component selection support device for assisting in selection of a real component determined by a designing device so as to match a component whose specification and connection relationship are defined, wherein product name information, unit price information and A component database storage unit that stores attribute information including specification information for each component, a reading unit that reads unit price information of the determined actual component from the component database storage unit, and a unit price information and quantity of the determined actual component. Amount information is calculated from and total calculation means for calculating the total, target value setting means for setting the target value of the total, product name information of the determined actual part, and unit price information thereof,
A component selection support device comprising: a display unit that displays the total calculated by the total calculation unit and the difference between the total target value set by the target value setting unit and the total on a display screen. 9. The real part displayed on the display screen further comprises a rearrangement means for rearranging the money information so that the money information is arranged in a predetermined order, and the display means adds the money information and rearranges it by the rearrangement means. 9. The component selection support device according to claim 8, which is displayed on the display screen in the order in which the parts are selected. 10. A display range designating unit for designating a display range of the determined real component on the display screen, wherein the reading unit includes product name information of the real component designated by the display range designating unit. The component selection support device according to claim 8 or 9, wherein unit price information is read from the component database storage means. 11. The component selection support device according to claim 8, wherein the storage content of the component database storage means is updated based on material information indicating a usage record.