My mother has a very small business and was contemplating a cash register but i was thinking it would be better to skip that altogether and go computerized. The aim is to beat the cash register price or come close and have superior features and ease of use. I would love for it to be low energy so that it minimally affects electric costs. I have a few ideas so far. Intel Atom Board 1GB ram Small HDD 15 inch LCD Mini ITX case and PSU/Powerbrick Keyboard & Mouse Mini Printer Maybe a UPS? barcode scanner upgrade in the future? What software is normally used for this? Any suggestions?