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Title:

???????????????????? OS

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Title: 1 Author: rtx100 Last modified by: June Created Date: 12/16/2003 10:59:07 AM Document presentation format ... – PowerPoint PPT presentation

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Title: ???????????????????? OS


1
???????????????????? OS
2
????????????? OS
  • ???????????????
  • ???????????????
  • ???????????????
  • ????????????????
  • ???????????????????????
  • ?????????????
  • ?????????????????
  • ?????, ?????????, ????????

3
OS ????????????????????????????
  • ?????????????????????????????????????????????
  • Clock Cycle
  • ???????????????????
  • ??????????????????
  • ???????????????
  • ????????????????????????? ???? Modular
  • ?????????
  • ????????
  • ???????????
  • ?????????????

4
????????????? OS
  • ?????????????????? (Process Mamagement)
  • ???????????????????? (Main Memory Management)
  • ????????????? (File Management)
  • ????????? I/O (I/O Management)
  • ???????????????????????????? (Secondary Storage
    Management)
  • ??????????????? (Networking)
  • ??????????? (Protection System)
  • ????????????? (Command Interpreter System)

5
??????????????????
  • ???????????????????????? OS
  • ?????????????????????????????????? (Running)
  • 1.??????????????????????
  • 2. ????????????????????????????????????????
  • 3. ?????????????????????????????????????
  • 4. ????????????????????????????????
  • 5. ????????????????????? (Deadlock)

6
????????????????????
  • ??????????????????????????????????
  • ????????????????????????????????????????????????
    CPU
  • 1.?????????????????????? RAM ?????????????????????
    ????????
  • 2.???????????????????????????????????????????????
    RAM ???? ???????????????????? RAM ????????
    ?????????????????????????????????? RAM ??????????
    Harddisk ????
  • ???????????????????????????? (Allocation,Deallocat
    ion)

7
?????????????
  • ??????????????????????????????????? ???????????
  • ??????????????????
  • ??????????????? ???????
  • ???????????????????? ???? Bad Sector,Fragment
  • 1.?????, ?????? ?????,?? ??????????
  • 2.???????????????????????????? (Manipulating)
  • 3.?????????????????????????
  • 4.???????????????????????

8
????????? I/O
  • ??????????? I/O ????????????????????? CPU
    ????????????????????? CPU ???
  • ????????????????????????????????????????????
  • 1.???????????????????????? Buffer,DMA,Cache,spooli
    ng
  • 2.??????? Device Driver
  • ????????? (Keyboard, VGA)
  • ???????? (Scanner, Digital Camera)

9
?????????????????????????
  • ?????????????????
  • ????????????????/??????????? ???????????????
  • 1. ????????????????????
  • 2. ?????????????????
  • ??????????????????????????

10
????????????? ???????????????
user
  • OS ?????????????????????????????????
  • 1. ?????????????
  • 2. ???????????
  • 3. ???????????
  • ????????????
  • ?????????? (Text)
  • ?????? (Graphics)
  • Shell ??? Kernel

Command
Shell
Kernel
11
Discuss
  • ??? ??. ?????????????????????? ???????????????????
    ?????
  • 1.???????????????????????????????????????????????
    ??????????????
  • 2. ????????????????????????????????????? OS
    ??????????????????????
  • 3.????????????????????????????????????????????
  • ??????????????????????????? ??????????????

12
OS ????????????
  • Windows
  • Linux
  • UNIX
  • Solaris,Berkley,HP,
  • SCO,etc.
  • Macintosh
  • DOS

13
Open Source ????????????????????
Linux ???????????? Source Code ??? OS
?????????? Windows ?????????????? ?
14
????
  • OS ???????????????????????????????
    ?????????????????
  • ??????????? OS ?????????? ???????????????????????
  • ???????
  • ??? ?.?. ???????????????????????????????????????
    OS ???????? OS ??????? ?????? Presentation
    ?????????????? ??? 2 ??????????? (Present
    ??????)
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