This Fortran 90 module, part pf PH Modular Series for Introductory Engineering, is by the authors of the best-selling FORTRAN 77 book, Nyhoff and Leestma. The module, designed for a short course, will introduce the important concepts of Fortran 90. The authors will incorporate a strong pedagogical approach that features examples and exercises for engineers and scientists, programming pointers, and programming problems.