Dartboard for sport, has point counting circuit performing point counting process when comparison circuit determines that dart arrow hits on magnetic inductive coil loops in point counting area

摘要

The dartboard has magnetic inductive coil loops (40) mounted on a board (20) in a direction in a rotatable manner. A comparison circuit (50) is electrically connected with the coil loops and an electronic point counting circuit (70). A dart guide unit is operated to produce a positive detection signal of the loops when a dart arrow hits on the board, and a negative detection signal is produced when the loops are adjacent. The point counting circuit performs a point counting process when the comparison circuit determines that the dart arrow hits on the loops in a point counting area.