Plot graph on dump terminal in Unix?!

Is any method or software to plot or display graph on unix dump terminal even the dump terminal is one color only(green)?
For my knowledge, we can use text based character to draw graph but not graphic mode.

for text consoles, i answered in the C forum how to do it with stars or similar. search there if this is what you want.

"dumb terminals" are text terminals.
most times they have no graphics (or they would not be "dumb"). they work similar to a typewriter.
since ascii only defines the codes from 0-127, you have to make your graphs with these characters. does the terminal support ansi, vt52, vt100 or how does it work? then you could have extended characters suitable for bar graphs...