A computer-based system and method for processing publications and recording industry-specific information, people and contact information contained in the publication. The acoustical tile compositions, with the polyamine epichlorohydrin resins binder, can be dried significantly faster than comparable compositions containing conventional starch binders. Therefore, it takes more time and is more inconvenient to key in characters into the portable electric device. A first switching system is operable to selectively couple outputs of the primary generators with inputs of the inverters.