OS_Introduction_计算机软件及应用_IT计算机_专业资料.ppt

Operating System CITS, NanKai University * Topics of OS (cont.) File system (Disk management) (6~8 lessons) Concept: files, directories, volume, file format and system Disk space management File system design and implementation File system security System call and user interface (2~4 lessons) Concept: soft interruption, hard interruption, CPU trap Initialization and system service loading of OS Interaction between user space and kernel spaces Environment management (2 lessons) Power management Security and stability maintenance Case analysis and advanced topics discussion (2 lessons) Source code review of several OS Research on OS and some academic topics Operating System CITS, NanKai University * Overview of OS history The motivation of OS Using computer in an easier way Using computer in a more efficient way Provide more powerful functions based on hardware The history of hardware Vacuum tubes and plugboards: no OS existed Transistors and batch systems Integrated Circuits and multiprogramming Personal computers Network and digital world Operating System CITS, NanKai University * History of OS: Stone Age Prehistoric age of OS (1940s ~mid-1950s) Famed persons: Babbage, Ada, Howard Aiken, John von Neumann, J. Presper Eckert and William Mauchley, Konrad Zuse (Germany) They constructed computing machines with vacuum tubes Programming is done in absolute machine language, which means changing the structure of circuit. The primary function of computer is scientific computing Please remember this age The foundation of Computing Science and Technology They dreamed of automatic computing machines, and they realized this dream with terrible basic facilities Operating System CITS, NanKai University * History of OS: Bronze Age Batch system (mid-1950s ~1965) Famed persons organizations OS: IBM, DEC, IBM 7094/1401, FMS Computer is consisted of transistors Structure of the operating system Batch process, a smart job scheduling method On line VS Off line Programming languag