On Wed, Nov 9, 2016 at 9:41 PM, Chuck Guzis <cclist at sydex.com> wrote:
  The MX-80 (and FX-80) were among the least expensive
of widely available
 dot-matrix printers that could also do graphics.  Hence the wide appeal.
 
Though it actually was extremely popular *before* they offered graphics for
it.  The original firmware supported text only.