"PCSCC, INC.", "Engineering", "ASTRO EQUATION SOLVER 3 V3.12", "SOL312", "03-01-94", "Solves linear and nonlinear simultaneous eq", "Solves linear and nonlinear simultaneous equations. Format-free. Up to 30 unknowns. Also a spreadsheet/calculator. Versatile, powerful and very portable. Generate multi-variable tables. Lookup tables, etc. "