Simulation package for small-scale systems

A simulation package for microcomputers has been developed which is applicable to small- and medium-size problems in the educational and industrial environment. The package consists of: an ordinary differential equations simulator capable of solving up to 12 simultaneous first-order ordinary differential equations; a simultaneous linear and nonlinear equations solver capable of solving systems containing up to 12 linear and nonlinear equations; an extended polynomial/nonlinear curve fitting program capable of fitting a variety of equations to a set of data points of Y_i versus X_i; and an extended multiple-linear-regression program which can fit mathematical models containing up to five linear parameters to experimental data. The paper describes this simulation package, demonstrates some typical applications, and summarizes recent experience in using the package in an educational environment.