Cash register program for my computer to keep track of profits?

Where can I find a free program that will essentially make my computer a cash register-- so I can keep track of profits and inventory? It exists, but I haven%26#039;t found it yet.

Cash register program for my computer to keep track of profits?rate my professor

i can%26#039;t answer you question but i will let you know that royal cash registers are good, but depending on the uses! they can come already programmed for certain businesses! i own the halfway mkt. and i have to do the tape every night and it would be nice to keep up with it by computer instead of by hand!