Abstract: A display system which has: a display device configured to be able to display an image superimposed on a reality space; and a managing device configured to manage the image the display device displays, wherein the display device has a display processor configured to read at least one of a qualified image and a disqualified image for an inspection target existing in the reality space from a memory and to display the read image superimposed on the reality space seen through an optical see-through displayer, on the displayer.

Abstract: A display system which has: a display device configured to be able to display an image superimposed on a reality space; and a managing device configured to manage the image the display device displays, wherein the display device has a display processor configured to read at least one of a qualified image and a disqualified image for an inspection target existing in the reality space from a memory and to display the read image superimposed on the reality space seen through an optical see-through displayer, on the displayer.

Abstract: To reduce lead time from order to delivery of a product made of a plurality of parts, and manage the order of parts without waste, a first identifier (tie ID or linkage ID) based on the planned production date of the product, and a second identifier representing the length of time from the order time of each part to the planned production date of the product are defined. Forecast information, which indicates the planned production quantity of the product, is associated with the identifiers. The ordered quantity of a part is associated with the identifiers. The current order information is calculated based on the forecast information and past order information based on the identifiers. The production lot size of an ordered part is adjusted according to the input of new forecast information.