Many people think of analog computing as a historic dead-end in computing. In
fact, nothing could be further from the truth as analog computing - together
with quantum computing - has the potential to bring computing to new levels
with respect to raw computational power and energy efficiency. The following
paper explains the limits of digital computers, gives a quick introduction to
analog computing in general, and shows a number of recent developments that
will change the way we think about computers in the next few years