Software

1
Software

• ??? ????????????? ?????????????????????????????
• ?????????????????
• System software
• Application software
• Customize Software
• Package Software

2
System Software

• ??????????
• Operating System
• Language Translator
• Utilities
• ?????????????????? Application Software ???
  Hardware

3
Operating Systems

• ???????????
• ??????/?????? ??????????? ?
• ?????? CPU
• ?????? ???????????
• ????????????? Input / Output
• ????/??????????????????????
• ????????????????????????????
• ???????????????????????????
• ???????????????????????

4
????????? Operating Systems

• Single program OS ????????? Run Application
  ?????????? 1 ???????????????
• Multitasking OS ????????? Run Application
  ?????????????? ??????? ??? CPU ???????????????????
  ? (time sharing) ???????????????????????
• Multiprocessing Operating Systems ??? CPU
  ??????? 1 ???????????????????? ??? OS
  ??????????????????????? ???????????
• Asymmetric Multiprocessing Specific task
  ??????????? CPU ??? specific amount of memory
• Symmetric Multiprocessing Share Task, Share
  memory
• Virtual Machine OS ?????????????? Run OS
  ?????????? 1?????????????????????????????????????

5
?????????????????????

• Fixed Partition ????????????????????????
• Variable Partition ??? ?????????????????????????
• Virtual Memory ?????????????????
• ??????????????????????????????????????????????????
  ?????????? Main memory ??? Swap
  ????????????????????????? Memory
  ???????????????????????
• ???????????????????? Swap
• ??? PAGE
• ??? SEGMENT

6
????????? Input/Output

• Buffer - ?????????????????????????????????????????
  ????????????????? Input device ???????????????????
  ???? Output Device
• Spooling - ???????????????????????????????????????
  ?? disk ???? ?????????????????????????????????????
  printer ??????
• Device Driver - ?????????? OS ????????????????????
  ????? ???????????????????????????
  ??????????????????????????????????????????????????
  ?????????????????

7
User Interface

• ??? ????????????????????????? ?????????????????
  2 ??????????
• Command Line Interface ?????????????????????????
  ???? ??????? ????????????????????????
  ?????????????????????????????? ???????
• Kernell - ???? Memory Resident
  ??????????????????????????? ?
• Shell - ???????????????? User Interface
• Graphical User Interface ??????? Graphic
  ????????????????????? ??????????????????????????
  ??????????????????????????????????????????????????
  ??????
• User Friendly ????????????????????
  ?????????????????????????? ????
  ???????????????????????????????????????????????

8
Utilities Program

• ?????????????????????????????????????????????? ?
• ???????? Utilities Program ??????????? OS
  ???????? ????????????????????????
• ???????? Function ????? ?? Utilities Program
• File Management
• Disk Management Format, Defragment
• Memory management
• Data Recovery
• Data Compression
• Virus Protection

9
File Management

• ??????????????????????
• Basic File Operation
• Create
• Add
• Delete
• Copy
• Rename
• Update

10
Virus

• ??????????????????????????????????????????????????
  ????? ???
• ??????????????????????????????????????????????????
  ??????????????????????
• ??????????????????????????????????????????????????
  ?????????????????????????????? ???????????????????
  ?????????? ???????????????????????
• ????????????????????????????????????
  ?????????????????????????(????????????????)
  ????????
• ????????????????????????????????????????????
  ??????? ???? ?????????? ???? ??????? Norton
  AntiVirus , McAfee

11
Hierarchical file system

• Directories
• Subdirectories
• Files

http//www.zdwebopedia.com/file_management_system.
htm
12
Popular OS

• DOS (Disk Operating Systems)
• Window95 , Window98
• Window NT
• ?????????? Client - Server
• ???????????????????????????? ???
  ????????????????????????????????????????????????
• ???????????????????????????? ????????????????????
  ????
• Unix ????????????(library) ????????????????? gt
  400 ?????? ??????????????????????????????
• OS/2 ???????????? IBM ???? Single User
  Multitasking OS ?????? PC ???? 32 bit