A method for creating an electronic marketplace includes receiving from a first client a request to create an electronic marketplace and receiving information about a product associated with the marketplace. Thermally conductive thin film layers made of copper foil are formed in parallel on a mount face and an opposite mount face of the printed board and inside the printed board so as to be thermally separated from each other. A first limb extends from the first side wall to beyond the second side wall, and a second limb extends from the second side wall to beyond the first side wall. Next, the system generates the index using the address information and the non-address information. The central processing unit can query the memory controller as to the specific location that generated the error and decide the next course of action based on the type of data affected.