It has:
-Database which stores its "time of day on/off records" in EEprom
-Real time clock to remember the time if power is lost
-Command driven Serial Channel at 115200 USB connection to a PC 8)
It is a standalone x10 controller that function whether or not a PC is powered up. However, you must provide a little 9 volt power supply to have it actively controlling your house or business.
I have to comment the PC C# program a bit more before I submit it for use. Once that is done you can use any part of this project for your own purposes. 
Oh, oh I forgot the link to the Sketch, http://ecoxsaver.com/index.php?page=x10-controller-sketch -there you go...