WearComp6 is built from standard PC104 modules, which may be purchased from Ampro (www.ampro.com), as well as a large number of other vendors. The PC104 modules are small-sized low-power-consumption components that stack together. To build WearComp6, you need to purchase the desired PC104 computer modules (which modules you purchase depends on desired functionality), desired hard drive(s) (again, depending on desired capacity, etc., you may wish to purchase one or two), case, etc.. Each of these items is described in the corresponding subsection below.