Software developed at Villanova University that focuses onsemiconductor material properties and concepts is described. Fourcomputer programs are described that were developed to perform thefollowing operations: (i) simulate crystal structures on a graphicsterminal, (ii) display the position of the thermal equilibrium Fermilevel as a function of temperature and doping density in a nondegeneratesemiconductor, (iii) simulate the Hall effect experiment, and (iv)simulate the diffusion profile of a minority carrier pulse as it driftsdownwards on a semiconductor bar (as in the Haynes-Shockley experiment).The programs have various hardware requirements. The two programs thatsimulate the Hall effect experiment and the Haynes-Shockley experimentwere written in BASIC and are implemented on the IBM PC/AT. Both of theprograms are small and could be used on any small personal computer. TheFermi level program was written in FORTRAN and implemented on a VAX11/780. The crystal structure simulation is performed by a sophisticatedgraphics package developed at Brigham-Young University
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