ModernOperatingSystem3rd现代操作系统)-Tanenbaum

PREFACE xxiv 1 INTRODUCTION 1 1.1 WHAT IS AN OPERATING SYSTEM? 3 1.1.1 The Operating System as an Extended Machine 4 1.1.2 The Operating System as a Resource Manager 6 1.2 HISTORY OF OPERATING SYSTEMS 7 1.2.1 The First Generation (1945-55) Vacuum Tubes 7 1.2.2 The Second Generation (1955-65) Transis