DEVICE HAVING TOUCH PANEL, RADAR APPARATUS, PLOTTER APPARATUS, SHIP NETWORK SYSTEM, INFORMATION DISPLAYING METHOD AND INFORMATION DISPLAYING PROGRAM

摘要

A touch panel device includes a detector, a display unit, and a controller. The detector detects one or more touches on a display screen. The display unit displays, on the display screen, one or more touch-detected marks at least around a position of the touch, each touch-detected mark indicating that the touch is detected. The controller controls a color of the touch-detected mark to be different between a case where the detector detects only a touch at a single position and a case where the detector detects touches at two positions.