The Free On-line Dictionary of Computing (30 December 2018):

Cellular Neural Network

    (CNN) The CNN Universal Machine is a low cost,
   low power, extremely high speed supercomputer on a chip.  It
   is at least 1000 times faster than equivalent DSP solutions
   of many complex image processing tasks.  It is a stored
   program supercomputer where a complex sequence of image
   processing algorithms is programmed and downloaded into the
   chip, just like any digital computer.  Because the entire
   computer is integrated into a chip, no signal leaves the chip
   until the image processing task is completed.

   Although the CNN universal chip is based on analogue and logic
   operating principles, it has an on-chip analog-to-digital
   input-output interface so that at the system design and
   application perspective, it can be used as a digital
   component, just like a DSP.  In particular, a development
   system is available for rapid design and prototyping.
   Moreover, a compiler, an operating system, and a
   user-friendly CNN high-level language, like the C
   language, have been developed which makes it easy to implement
   any image processing algorithm.

   [Professor Leon Chua, University of California at Berkeley].

   (1995-04-27)