1. Basic magnetostatics; 2. Magnetic films; 3. Properties of patterned ferromagnetic film; 4. Magnetoresistance effects and memory devices; 5. Field-write mode MRAMs; 6. Spin torque transfer MRAM; 7. Applications of MTJ based technology; Appendices: A. Unit conversion table cgs vs. SI; B. Dimensions of magnetism; C. Physical constants; D. Normal (Gaussian) distribution and quantile plot; E. Weibull distribution; F. TDDB reliability test of thin film; G. Binomial distribution and Poisson distribution; H. Defect density; I. Fe, Co, Ni element chemistry parameters; J. Soft error, hard fail and design margin.