DARPA sees Analog

My introduction to digital computing came just as the last courses were taught using analog methods.   The convenience of digital devices was so overwhelming that you could easily see analog methods disappearing completely.  Yet there were then and are now examples where analog works better.   DARPA looks at this future.  " ... the DoD is funding a new program called UPSIDE, short for Unconventional Processing of Signals for Intelligent Data Exploitation. Basically, the program will investigate a brand-new way of doing computing without the digital processors that have come to define computing as we know it ... "