(OS?????????)

1
????7

• ?????????2
• (OS?????????)

2
???????

• ??????CPU???????
• ??????OS???????????

3
OS(Operating System)

• ????????
• ?????????????????????????????????

???????? ???1 ???????? ???2 ???????? ???2
OS OS OS
???????? / BIOS ???????? / BIOS ???????? / BIOS
?????? ?????? ??????
4
OS???

• ???????????
• (??????????????)
• ?????????????????????(????????)
• ???????????
• (FDD?HDD?????????)

5
?????????

1. ??ON
2. CPU?????????????????????????????(BIOS ROM)?
3. BIOS???
4. IPL???
5. OS???

6
BIOS(Basic Input/Output System)
????BIOS???

• CPU??????????????????
• ??????????????????
• ?????????????????
• ?????????
• ???????????(???????)???
• ????????????????????????????????
• ??OS???????????????OS?????????????????(?????????IP
  L???)?

7
IPL(Initial Program Loader)

• OS????????????????????????????????????????????????
  ?

Windows95/98/Me??? IPL???IO.SYS??????????COMMAND.C
OM? Windows?????????????? WindowsNT/2000/XP??? IP
L???NTLDR????????NTLDR?BOOT.INI?BOOTFONT.BIN ?????
????NTDETECT.COM?????????????? ????Windows????????
????
8
OS???

• 1955? ?????????????????
• 1964? OS/360(IBM)??????OS
• 1970?? UNIX?????OS
• 1974? CP/M(????????)???????????OS
• 1981? MS-DOS(????????IBM)
• 1982? PC-9801(NEC)N88-BASIC
• 1984? ????????(????)GUI
• 1985? ??????1.0(???????)MS-DOS????
• 1992? ??????3.1(???????)MS-DOS????
• 1995? ??????95(???????)????GUI???????
• 1998? ??????98(???????)
• 2000? ??????2000(???????)(Me)
• 2001? ??????XP(???????)
• 2007? ??????Vista(???????)

9
OS???

• UNIX??????????OS??????????????????
• MS-DOS16???CPU?OS?CUI
• ????????GUI
• ??????X.XGUI??
• ??????2000?NT??????????

CUICharacter User Interface GUIGraphical User
Interface
10
GUI

• 1981? ????? ??????
• 1983? ???? ?????
• 1984? ???? ???????????
• 1995? ??????? Windows95

??
???
11
Linux(?????UNIX)

• ????????????????(Linus Torvalds)??????
• ??????????????, ???? Unix ?????????????(OS)
• ??????? ? ????????

12
???????

• 1975? MITS??Altair8800??
• ???????2???????????????????Altair????BASIC?????M
  ITS????????
• ??????NEC??????????
• IBM?????????PC?OS??????
• ????????????????OS??????????????????IBM??????MS-DO
  S???(1981?)?
• 1985? Windows1.0??????
• 1995? Windows95??????

13
????????

• ??????????????????????????
• ???
• FORTRAN
• COBOL
• BASIC
• C??

14
???

• 2????????????????????
• ?
• ?????????????????????????????????????????????????
  ????
• ????????????????????????????????????

15
?????????????

• 123????
• ???????15???1????
• ???????16???2????
• CPU?????A??????
• ??????????????????17??????
• ???????15???????????A?????
• ????A??????????16?????????????????????A?????
• ????A????????????17?????
• ????????
• LD A, (15) 15??????????A?????
• ADD A, (16) 16??????????A????????????A?????
• LD (17) A ????A????17???????
• ?????LD??2?????00111010?
• ???????????CPU?????????????????
• ????1?1????????

16
????

• ?????????????????
• ? ??????????!
• FORTRAN???????
• COBOL???????
• BASIC?????
• C??UNIX?????????????
• BASIC??
• PRINT 12

17
??????????

• ???????????????????
• ????????????????
• ??????????
• ?????????????
• ???????????????
• ??????????????
• IE????????

18
??

• OS?????????????????
• ?????????OS???3?????
• TSS(Time Sharing System)?????
• ?????????????

19
????????

• ?????????
• ????
• ??
• ?????
• ??
• ?????

20
??

• ????
• ???(???)I(a)-log2P(a)
• ?????????(A-D??)
• ???????????????????????
• ????16??(??)
• ???(??)
• ????(????)
• ?????????
• ?????(??????)

21
??

• ?????????????
• ???????????????IC
• ?????????
• RAM?ROM???????????
• ?????????(??)
• FD?HDD?CD?DVD
• ?????????????
• ?????????

22
??

• OS(?????)
• ?????????(??)