Aspects for program pulse generation during programming of nonvolatile electronic devices include providing a configurable voltage sequence generator to manage verify-pulse and pulse-verify switching as needed during modification operations of a programming algorithm for nonvolatile electronic devices, wherein more efficient modification operations result. An electrical signal generator is operatively connected to the transducer for energizing same with an alternating electrical signal. In the semiconductor layer, a trench is formed to have a depth to reach the substrate. 5, whereby spherical cured resin particles are formed. The first, and the third and the first internal power source lines are connected, and the second, and the fourth and the second internal power source lines are connected.