Introduction - If you have any usage issues, please Google them yourself
The wiring problem: as shown in Figure 1, the printed circuit board wiring area is divided into n* m Box. Accurate circuit wiring question asked to determine the midpoint connected to the grid a to b the midpoint of the shortest wiring. When wiring the circuit only along a straight line or at right angles to the wiring, shown in Figure 1 above. In order to avoid the lines intersect, the wiring box blockade mark (shaded in Figure 1), other lines are not allowed to pass through the box is blocked.