Imminent death has been predicted for analog since the advent of the PC. But it is still here; in fact, analog ICs have been growing at almost exactly the same rate as digital ones. A digital video disk player has more analog content than the (analog) VCR ever did.

The explanation is rather simple: the world is fundamentally analog. Hearing is analog. Vision, taste, touch, smell, analog all. So is lifting and walking. Generators, motors, loud-speakers, microphones, solenoids, batteries, antennas, lamps, LEDs, laser diodes, sensors are fundamentally analog components.

The digital revolution is constructed on top of an analog reality. This fact simply won't go away. Somewhere, somehow you have to get into and out of the digital system and connect to the real world.

(Hans Camezind: Designing Analog Chips)