A display device for displaying contents of data associated with operation of a plurality of electronic component mounting machines at a production site, the display device comprising:
- a display;
- and
- one or more processors configured to:
- extract necessity information from the data associated with the operation of the electronic component mounting machines, wherein
- the necessity information describes necessity of use of each of a plurality of functions, which are respectively selectively usable in the electronic component mounting machines for production of workpieces by the electronic component mounting machines,
- each of the plurality of functions is a function that is an interaction between one of the electronic component mounting machines and a corresponding production lot of workpieces for the production of the workpieces of the production lot,
- a function, of the plurality of functions, that is described as necessary by the necessity information is a function that is required in a process performed by the one of the electronic component mounting machines for the production of the workpieces of the production lot, and
- a function, of the plurality of functions, that is described as unnecessary by the necessity information is a function that is not required in the process performed by the one of the electronic component mounting machines for the production of the workpieces of the production lot;
- cause the display to display a plurality of icons each corresponding to a respective function of the plurality of functions;
- and
- cause the display to display each of the icons so as to demonstrate the necessity information of the respective function including:
- displaying an icon of the function that is described as necessary,
- displaying an icon of the function that is described as unnecessary, and
- displaying the icon of the function that is described as necessary and the icon of the function that is described as unnecessary such that they are distinguished by at least one of at least one of a size, a shape, a color, and a behavior so as to demonstrate the necessity information of the function that is described as necessary and the necessity information of the function that is described as unnecessary, wherein
- the data associated with the operation of the electronic component mounting machines includes part data which instructs an operation condition for each type of electronic component, and
- the one or more processors is configured to cause the display to display a figure that illustrates a shape of the electronic component and the operation condition described by the part data at the same time as when displaying the plurality of icons.