Advances in digital electronic circuits have prompted the boost in functions and ever- smaller size of such popular consumer goods as digital cameras, MP3 players and digital televisions. But the same cannot be said of the older analog circuits in the same devices, which process natural sights and sounds in the real world.
MIT professor Hae-Seung Lee and his colleagues have developed new analog circuits -- comparator-based switched capacitor circuits -- that handle voltage differently than conventional analog ones, resulting in greater power efficiency. Photo / Donna Coveney