Buying, selling, and trading technology: What technologies can engineers export? What information can they exchange? Here's an update on U.S. technology-transfer controls

Exhibit 1: a computer chip stamped in Cyrillic letters by its Soviet manufacturer. Stephen Bryen tossed it on the desk in his office at the Pentagon in Washington, D.C. "That chip was designed in the U.S.," he said. "Now the Soviets have it."