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 ...

Liu’s pathbreaking research aided the transition from analog to digital processing of sound, images and video. His Ph.D. students went on to become leading figures in academia and industry.

Modulation is fundamental to electronic communications. The modulating signal might be analog in nature (voice or music) or digital bit streams. Most modern communication systems are digital, using ...

Today, we are surrounded by digital electronics. Devices that work with analog electronics are very rare. Computers, telephones, cameras, CD players, printers, radios, and TVs all operate with digital ...