Because of fundamentally analog SI (signal-integrity) issues that accompany today's higher data rates, digital electronics is now as much analog as it is digital. As SI expert Eric Bogatin, PhD, chief technology officer of GigaTest Laboratories put it several years ago, "There are only two kinds of EEs: those who have had SI problems and those who will." Still, although you mustn't become complacent, system architects, IC gurus, and test-instrument designers are hard at work making digital design's transition to SI's analog world as painless as possible. Even so, most EEs will experience some discomfort.
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