Evaluation of Grounding Function for Electronic Circuits

Abstract

The POS system is normally connected with various input/output devices and are used under various conditions such as outdoors, kitchens or portable applications in contrast with the applications for indoor business equipment. Because of the connection to input/output devices, the robustness in the market is important. A card reader terminal was used to improve its robustness under severe applying conditions and also to study the way to evaluate the grounding.