The Perfect Roadway: No Wrecks Allowed!

The Perfect Roadway: No Wrecks Allowed!

In real life, it would be great if somehow you could drive your car as fast as you like, never have to stop at traffic lights, get where you are going easily, and never have a wreck. It almost sounds like something out of a bad science fiction movie, but with switches, the equivalent does occuryou can create a world without collisions.

With the switch logic you have learned about so far, multiple devices can send, but the example had the guys (Fred and Barney) talking and the gals (Betty and Wilma) talking. What if everyone wanted to talk (send) to Fred at the same time? Figure 6-4 shows the potential problem.