A measurement module for glucose testing includes a glucose testing measurement module housing, a test strip receptacle formed in the housing, and a connector portion formed in the housing and shaped to permit mechanical removable attachment of the housing to a hand-held computer. The panel fixing plate is made of a component having a thermal expansion coefficient lying midway between the thermal expansion coefficients of the holding frame and the cross dichroic prism. A thickness of the central region is greater than a thickness of the fringe region, and the central region has a containing cavity. The second data field is to indicate an attribute of interest. The system may define a boundary between the first and second regions based on the first colored link and the second colored link. To save erase and write operations for the table block, the new table is written directly after the most recent table unless there is not enough space.