Fisher, Tom L (FISHER) wrote:

> Several years ago we built a dual channel "O'SCOPE 1" based on a
> PIC16C73 with an Optrex DMF697 display.  ...

> We abandoned the project when we found a $200 handheld 'scope sold by
> Tech America; it was cheaper and more capable.

  Undoubtedly.  The concept I feel has most promise, if you absolutely
*must* build it yourself, is to build it in the form of a cartridge for
a (tm)Pocket GameBoy.
--
  Cheers,
        Paul B.