Turbo C and Basic computer languages help to create a very interesting software, simulating oncological, fluid mechanics and education models. In this book author presents the developed using these computer languages useful software programs for Oncology: "Medical Office", "Medical Commander", "Prognosis", for Fluid Mechanics: "Models of bubbles behavior under different influences in different g-factor conditions" and for Education: "Document Commander" and "Examiner". The developed software products successfully passed practical tests and can be used in real practice.