The distinction between analog and digital signals is very simple, but it can still be a challenge to wrap one's mind around the concepts that define the two systems. Just when you think you've got it ...

In the first installment of this course, we learned that a digital value is a quantity that varies “in steps” and can take on only a finite number of values. In today’s logic systems, only two ...

Most wireless headphones and speakers rely on some type of digital signal processing. Here's what you need to know about DSP—and why it's hard to avoid. I've been a contributing editor for PCMag since ...