Leah Zitter is a technical writer who covers high tech. She holds a Ph.D. in psychology research and a master’s in philosophy and advanced logic. Eleven years ago, researchers warned in the journal ...

For a useful primer on circuit design, see Optimize your DSPs for power and performance. To learn how power and performance vary with voltage and temperature, see Push performance and power beyond the ...

The bell rings at 10:00 a.m. A teacher begins explaining quadratic equations. Some students lean forward, pencils ready. Others stare at the clock. A few are still turning yesterday’s lesson over in ...