From students doing projects for my classes, I would like to see 
a demo.  Also as practice in writing research papers on projects 
(you cannot do demos for hundreds of people) the following is desired:

You still need to do a write up. You should have
 
	an intro (what you are doing), 
        background on what others have done in this and related areas, 
                enough backgound to understand the problem 
                (should be references) then what you actually did 
 	a description of the solution/algorithm,
	a sample run (working) (you can talk about it (a specific 
		example - not generalities) or illustrate it with 
		output lines),
	a sample run of a possible error situation (or a description 
		of what it would do...and possibly how it could be improved)
	discuss the limitations, 
	and discuss the goodness of the program.  

	say where one could go from here...
	problems encountered in the coding and design
        also any interesting peculiarities you may want to share.



For the background, you do not need as much as a research paper, but
you should have looked at *some* other work to get ideas