Here's why:

* Alternating current (AC) changes direction periodically. It flows back and forth in a cyclical pattern. This is in contrast to direct current (DC), which flows in only one direction.

* Most electronic devices *do not* run directly on AC. They require DC power. This is because many electronic components are sensitive to the constant changes in direction of AC.

* Power adapters (like those used for laptops, phones, etc.) are used to convert AC from the power outlet into DC that the device can use.

Therefore, the statement is wrong on both accounts. AC does not travel in one direction, and most electronic devices use DC, not AC.