Alpha and Omega Semiconductor (AOS) really is the alpha and omega of the semiconductor industry. The company designs and sells more than 600 types of analog power semiconductors, including power ICs (integrated circuits) and power discrete (non-integrated circuits) chips, such as power MOSFETs (metal-oxide semiconductor field-effect transistors). (Power semiconductors are used in power switches to control the amount of electricity needed to run electronic devices.) AOS primarily uses Hua Hong NEC in China to manufacture its chips, which are distributed in Asia and resold to customers such as ASUSTeK, Dell, HP, Samsung, Hon Hai Precision Industry, Quanta Computer, and Wistron. AOS went public in 2010.