Informatics for the 9th grade. Part I

Contents
Part I: Introduction to Informatics
Information
Models and modelling
Part II: Hardware and Software
History of the computer equipment
Principled structure of von Neumann’s computer
Hardware
Software
Part III: Basics of the Informatics
Positional numeral systems
Boolean logic
Algorithms
Description of algorithms
Part IV: Introduction to programming
Formal languages
Development environments
Appendixes
Appendix I Scientists
Appendix II References