INTERACTIVE DEVICE

摘要

PURPOSE:To re-display a past display screen with a simple operation by reading corresponding task information from a history menu storage table and displaying the selection-requested screen when notice data of a selection request is given. CONSTITUTION:An input data judgement means 4 judges a request content from an input device 3 and outputs notice data. A hierarchy menu display means 5 displays the content of a hierarchy menu table 8 on a display device 2. A virtual screen display means 10 generates virtual screen data and displays it on the display device 2 by a plural screens display means 6. A history menu display means 12 displays the content of the history menu storage table 11 on the display device 2 by a display request. When a task generation means 7 generates task information, notice data and generated task information are sequentially stored in the history menu storage table 11, and the content of the history menu storage table 11 storing them as retrieval information of the past screen by the display request of an operator is displayed on the display device 2.