ch12.mht

如果想学习操作系统

      <STRONG><IMG height=3D16=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LyP.GIF"=
=20
      width=3D16></STRONG><FONT class=3Dnormal size=3D4> =
=C6=F7=BC=FE=B5=C4=B2=BB=B6=CF=B8=FC=D0=C2=BB=BB=B4=FA=A1=A3</FONT></TD><=
/TR>
  <TR>
    <TD width=3D"100%" height=3D23>
      <P =
align=3Dleft>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <IMG =

      height=3D16=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LFUCHS~1=
.GIF"=20
      width=3D16><FONT class=3Dnormal size=3D4> =
=BC=C6=CB=E3=BB=FA=CC=E5=CF=B5=BD=E1=B9=B9=B5=C4=B2=BB=B6=CF=B7=A2=D5=B9=A1=
=A3</FONT> <BR><SPAN=20
      class=3Dstyle1></SPAN><SPAN class=3Dstyle1></SPAN></P></TD></TR>
  <TR>
    <TD height=3D35><IMG height=3D25=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/Eyeball.=
gif"=20
      width=3D24> <SPAN =
class=3Dstyle1>=B2=D9=D7=F7=CF=B5=CD=B3=CB=C4=B8=F6=B7=A2=D5=B9=BD=D7=B6=CE=
 </SPAN></TD></TR>
  <TR>
    <TD height=3D35>
      <P><SPAN =
class=3Dnormal>=A1=A1=A1=A1=B2=D9=D7=F7=CF=B5=CD=B3=B5=C4=B7=A2=D5=B9=BA=CD=
=BC=C6=CB=E3=BB=FA=D3=B2=BC=FE=BC=BC=CA=F5=A1=A2=CC=E5=CF=B5=BD=E1=B9=B9=CF=
=E0=B9=D8=A3=AC=BE=AD=C0=FA=C1=CB=CB=C4=B8=F6=B7=A2=D5=B9=BD=D7=B6=CE=A3=BA=
</SPAN>=20
</P></TD></TR>
  <TR>
    <TD height=3D35>
      <P>=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1<IMG height=3D16=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LBLUEP2.=
GIF"=20
      width=3D16><SPAN class=3Dnormal>=B5=DA=D2=BB=B4=FA =
(1946=C4=EA-1955=C4=EA)=A3=BA =
=D5=E6=BF=D5=B9=DC=CA=B1=B4=FA=A3=AC=CE=DE=B2=D9=D7=F7=CF=B5=CD=B3</SPAN>=
</P>
      <P>=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1<IMG height=3D16=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LFUCHS%7=
E1.GIF"=20
      width=3D16><SPAN class=3Dnormal>=B5=DA=B6=FE=B4=FA =
(1955=C4=EA-1965=C4=EA)=A3=BA =
=BE=A7=CC=E5=B9=DC=CA=B1=B4=FA=A3=AC=C5=FA=B4=A6=C0=ED=CF=B5=CD=B3 =
</SPAN></P>
      <P>=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1<IMG height=3D16=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LBULEP.G=
IF"=20
      width=3D16><SPAN class=3Dnormal>=B5=DA=C8=FD=B4=FA =
(1965=C4=EA-1980=C4=EA)=A3=BA =
=BC=AF=B3=C9=B5=E7=C2=B7=CA=B1=B4=FA=A3=AC=B6=E0=B5=C0=B3=CC=D0=F2=C9=E8=BC=
=C6=20
      </SPAN></P>=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1<IMG height=3D16=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LREDP.GI=
F"=20
      width=3D16><SPAN class=3Dnormal2>=B5=DA=CB=C4=B4=FA (1980=C4=EA - =
=D6=C1=BD=F1)=A3=BA=20
      =
=B4=F3=B9=E6=C4=A3=BA=CD=B3=AC=B4=F3=B9=E6=C4=A3=BC=AF=B3=C9=B5=E7=C2=B7=CA=
=B1=B4=FA=A3=AC=B7=D6=CA=B1=CF=B5=CD=B3=A1=A3=CF=D6=B4=FA=BC=C6=CB=E3=BB=FA=
=D5=FD=CF=F2=D7=C5=BE=DE=D0=CD=A1=A2=CE=A2=D0=CD=A1=A2=D0=D0=A1=A2=B7=D6=B2=
=BC=A1=A2=CD=F8=C2=E7=BB=AF=BA=CD=D6=C7=C4=DC=BB=AF=BC=B8=B8=F6=B7=BD=C3=E6=
=B7=A2=D5=B9=A1=A3 </SPAN><BR><SPAN=20
      class=3Dstyle1><A=20
      =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/_vti_bin/shtml.dll/chap=
ter1/pages/ch12.htm/map4"><IMG=20
      height=3D33 isMap=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/Backhead=
.gif"=20
      width=3D145 align=3Dright useMap=3D#FrontPageMap4Map =
border=3D0></A></SPAN><SPAN=20
      class=3Dstyle1> <MAP name=3DFrontPageMap4Map><AREA shape=3DRECT=20
        coords=3D1,1,144,31=20
        =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/pages/ch12.htm=
#=B8=C5=C2=DB"></MAP></SPAN></TD></TR>
  <TR>
    <TD width=3D"100%" height=3D50><IMG height=3D25=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/Eyeball.=
gif"=20
      width=3D25><FONT class=3Dstyle1 color=3D#008080> =
=CE=DE=B2=D9=D7=F7=CF=B5=CD=B3=B5=C4=BC=C6=CB=E3=BB=FA=CF=B5=CD=B3</FONT>=
</TD></TR>
  <TR>
    <TD width=3D"100%" height=3D565><IMG height=3D36=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/Star.gif=
"=20
      width=3D28><IMG height=3D29=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/=C8=CB.G=
IF"=20
      width=3D29><SPAN class=3Dstyle4><FONT color=3D#b40315=20
      size=3D5>=B9=A4=B2=D9=D7=F7=B7=BD=CA=BD</FONT></SPAN><A =
name=3D=C8=CB=B9=A4=B2=D9=D7=F7></A><BR>
      <P =
class=3Dnormal>=B4=D3=B5=DA=D2=BB=CC=A8=BC=C6=CB=E3=BB=FA=B5=AE=C9=FA(194=
5=C4=EA) =B5=BD 50 =
=C4=EA=B4=FA=D6=D0=C6=DA=B5=C4=BC=C6=CB=E3=BB=FA=A3=AC=CA=F4=D3=DA=B5=DA=D2=
=BB=B4=FA , =
=C4=C7=CA=B1=BB=B9=CE=B4=B3=F6=CF=D6=B2=D9=D7=F7=CF=B5=CD=B3=A1=A3 </P>
      <DIV align=3Dcenter><IMG height=3D291=20
      src=3D"http://oa.gdut.edu.cn/os/multimedia/images/6.jpg"=20
width=3D578><BR></DIV>
      <P class=3Dnormal2 align=3Dleft><STRONG><SPAN =
class=3Dstyle5>ENIAC=BC=C6=CB=E3=BB=FA</SPAN> =A3=A8=20
      =
</STRONG>=C3=C0=B9=FA=B1=F6=CF=A6=B7=A8=C4=E1=D1=C7=B4=F3=D1=A7=A3=A9<BR>=
<STRONG><SPAN class=3Dstyle6>=D4=CB=CB=E3=CB=D9=B6=C8</SPAN>=A3=BA=20
      </STRONG>5000=B4=CE/=C3=BF=C3=EB =A1=A1=A1=A1=A1=A1=A1=A1=A1=A1 =
<STRONG><SPAN class=3Dstyle6>=D5=E6=BF=D5=B9=DC</SPAN>=A3=BA=20
      </STRONG>18000=B8=F6 <BR><STRONG><SPAN =
class=3Dstyle6>=D5=BC=B5=D8=C3=E6=BB=FD</SPAN>=A3=BA=20
      </STRONG>182=C6=BD=B7=BD=C3=D7 <STRONG><SPAN =
class=3Dstyle6>=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=D6=D8 =C1=BF =
</SPAN>=A3=BA=20
      </STRONG>130=B6=D6 <BR><STRONG><SPAN class=3Dstyle6>=B9=A6 =
=A1=A1=BA=C4 </SPAN>=A3=BA </STRONG>140kW=20
      </P></TD></TR>
  <TR>
    <TD class=3Dnormal2 =
height=3D54>=A1=A1=A1=A150=C4=EA=B4=FA=D4=E7=C6=DA=B3=F6=CF=D6=C1=CB=B4=A9=
=BF=D7=BF=A8=C6=AC=A3=AC=B3=CC=D0=F2=D0=B4=D4=DA=BF=A8=C6=AC=C9=CF=C8=BB=BA=
=F3=B6=C1=C8=EB=BC=C6=CB=E3=BB=FA=A1=A3=B5=AB=BC=C6=CB=E3=B9=FD=B3=CC=D4=F2=
=D2=C0=C8=BB=C8=E7=BE=C9=A1=A3=20
  </TD></TR>
  <TR>
    <TD width=3D"100%" height=3D242>
      <BLOCKQUOTE class=3Dnormal2>
        <P align=3Dcenter><IMG height=3D177=20
        =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/chuankon=
g.gif"=20
        width=3D448> <BR><SPAN class=3Dstyle7>=B4=A9=BF=D7=BF=A8=C6=AC =
</SPAN></P></BLOCKQUOTE></TD></TR>
  <TR>
    <TD height=3D88>=A1=A1=A1=A1 <SPAN=20
      =
class=3Dnormal2>=D4=E7=C6=DA=BC=C6=CB=E3=BB=FA=B5=C4=B9=A4=D7=F7=A3=AC=BB=
=F9=B1=BE=C9=CF=B2=C9=D3=C3=C8=CB=B9=A4=B2=D9=D7=F7=B7=BD=CA=BD=A3=BA=D3=C9=
=B2=D9=D7=F7=D4=B1=BD=AB=D6=BD=B4=F8=A3=A8=BB=F2=BF=A8=C6=AC=A3=A9=D7=B0=C8=
=EB=D6=BD=B4=F8=CA=E4=C8=EB=BB=FA=A3=A8=BB=F2=BF=A8=C6=AC=CA=E4=C8=EB=BB=FA=
=A3=A9=A3=AC=D2=D4=B0=D1=B3=CC=D0=F2=BA=CD=CA=FD=BE=DD=CA=E4=C8=EB=BC=C6=CB=
=E3=BB=FA=A3=AC=B5=B1=B3=CC=D0=F2=D0=D0=CD=EA=B1=CF=A3=AC=D3=C9=D3=C3=BB=A7=
=C8=A1=D7=DF=D6=BD=B4=F8=BA=CD=BC=C6=CB=E3=BD=E1=B9=FB=BA=F3=A3=AC=B2=C5=C8=
=C3=CF=C2=D2=BB=B8=F6=D3=C3=BB=A7=C9=CF=BB=FA=B2=D9=D7=F7=A1=A3=20
      </SPAN></TD></TR>
  <TR>
    <TD width=3D"100%" height=3D100>
      <BLOCKQUOTE><IMG height=3D19=20
        =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LredQ.GI=
F"=20
        width=3D19><SPAN class=3Dbiaoti2><FONT =
size=3D4>=C8=CB=B9=A4=B2=D9=D7=F7=B7=BD=CA=BD=BE=DF=D3=D0=D2=D4=CF=C2</FO=
NT></SPAN><FONT=20
        color=3D#0000ff =
size=3D4><STRONG>=CC=D8=B5=E3</STRONG>=A3=BA</FONT>=20
        <BLOCKQUOTE>
          <P><IMG height=3D16=20
          =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LbuleP.G=
IF"=20
          width=3D16><SPAN =
class=3Dnormal>=D3=C3=BB=A7=B6=C0=D5=BC=C8=AB=BB=FA=A1=A3</SPAN></P>
          <P><IMG height=3D16=20
          =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LbuleP.G=
IF"=20
          width=3D16><SPAN class=3Dnormal><FONT =
size=3D4>CPU=B5=C8=B4=FD=C8=CB=B9=A4=B2=D9=D7=F7=A1=A3</FONT></SPAN></P>
          <P><SPAN class=3Dnormal><IMG height=3D16=20
          =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LbuleP.G=
IF"=20
          width=3D16><FONT =
size=3D4>=B4=AE=D0=D0=D0=D4</FONT></SPAN></P></BLOCKQUOTE>
        <P><IMG height=3D19=20
        =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LredQ.GI=
F"=20
        width=3D19><SPAN =
class=3Dbiaoti2>=C8=CB=B9=A4=B2=D9=D7=F7=B7=BD=CA=BD=BE=DF=D3=D0=D2=D4=CF=
=C2</SPAN><FONT size=3D4><STRONG><FONT=20
        color=3D#0000ff>=C8=B1=B5=E3</FONT></STRONG>=A3=BA</FONT></P>
        <BLOCKQUOTE>
          <P><IMG height=3D16=20
          =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LbuleP.G=
IF"=20
          width=3D16><FONT =
class=3Dnormal>=BC=C6=CB=E3=BB=FA=B5=C4=D3=D0=D0=A7=BB=FA=CA=B1=D1=CF=D6=D8=
=C0=CB=B7=D1</FONT> </P><IMG height=3D16=20
          =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LbuleP.G=
IF"=20
          width=3D16><SPAN class=3Dnormal><FONT style=3D"FONT-FAMILY: "=20
          #invalid_attr_id=3D"20px" =
=D0=C2=CB=CE=CC=E5?;?>=D0=A7=C2=CA=B5=CD=20
    </FONT></SPAN></BLOCKQUOTE></BLOCKQUOTE></TD></TR>
  <TR>
    <TD width=3D"100%" height=3D45><A =
name=3D=CD=D1=BB=FA=CA=E4=C8=EB=CA=E4=B3=F6></A><IMG height=3D36=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/Star.gif=
"=20
      width=3D28><IMG height=3D29=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/=CD=D1.G=
IF"=20
      width=3D29><SPAN class=3Dstyle4><FONT=20
      =
color=3D#a6335f><STRONG><BIG><BIG>=BB=FA=CA=E4=C8=EB=CA=E4=B3=F6=B7=BD=CA=
=BD</BIG></BIG></STRONG></FONT></SPAN><FONT=20
      color=3D#a6335f><STRONG><BIG><BIG> <MAP =
name=3DFrontPageMap6Map><AREA=20
        shape=3DRECT coords=3D-1,3,143,32=20
        =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/pages/ch12.htm=
#=B8=C5=C2=DB"></MAP></BIG></BIG></STRONG></FONT></TD></TR>
  <TR>
    <TD height=3D46><SPAN class=3Dstyle4><FONT=20
      =
color=3D#a6335f><STRONG><BIG><BIG></BIG></BIG></STRONG></FONT></SPAN><FON=
T=20
      color=3D#a6335f><STRONG><BIG><BIG><A=20
      =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/_vti_bin/shtml.dll/chap=
ter1/pages/ch12.htm/map6"><IMG=20
      height=3D33 isMap=20
      =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/Backhead=
.gif"=20
      width=3D145 align=3Dright useMap=3D#FrontPageMap6MapMap=20
      border=3D0></A></BIG></BIG></STRONG></FONT><FONT=20
      color=3D#a6335f><STRONG><BIG><BIG> <MAP =
name=3DFrontPageMap6MapMap><AREA=20
        shape=3DRECT coords=3D-1,3,143,32=20
        =
href=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/pages/ch12.htm=
#=B8=C5=C2=DB"></MAP></BIG></BIG></STRONG></FONT></TD></TR>
  <TR>
    <TD width=3D"100%" height=3D170>
      <BLOCKQUOTE><SPAN class=3Dnormal><FONT=20
        =
color=3D#ff0000><BIG><BIG><BIG>&nbsp;</BIG></BIG></BIG></FONT></SPAN><SPA=
N=20
        class=3Dnormal2><FONT color=3D#ff0000><BIG><BIG><BIG>=20
        =
=D4=DA</BIG></BIG></BIG></FONT>=B2=C9=D3=C3=CD=D1=BB=FA=CA=E4=C8=EB=CA=E4=
=B3=F6=B7=BD=CA=BD=CA=B1=A3=AC=D3=C9=D3=DA=B3=CC=D0=F2=BA=CD=CA=FD=BE=DD=B5=
=C4=CA=E4=C8=EB=CA=E4=B3=F6=B6=BC=CA=C7=D4=DA=CD=E2=CE=A7=BC=C6=CB=E3=BB=FA=
=BF=D8=D6=C6=CF=C2=CD=EA=B3=C9=B5=C4=A3=AC=BB=F2=D5=DF=CB=B5=CB=FC=C3=C7=CA=
=C7=C0=EB=D6=F7=BB=FA=BD=F8=D0=D0=B5=C4=A3=AC=B9=CA=B3=C6=D6=AE=CE=AA=CD=D1=
=BB=FA=CA=E4=C8=EB=CA=E4=B3=F6=B2=D9=D7=F7=A1=A3=D5=E2=D6=D6=CD=D1=BB=FA=CA=
=E4=C8=EB=CA=E4=B3=F6=B7=BD=CA=BD=B5=C4=D6=F7=D2=AA=D3=C5=B5=E3=C8=E7=CF=C2=
:<BR></SPAN><FONT=20
        size=3D4><BR><IMG height=3D16=20
        =
src=3D"http://oa.gdut.edu.cn/os/multimedia/oscai/chapter1/images/LBLUEP2.=
GIF"=20
        width=3D16>=BC=F5=C9=D9=C1=CB CPU =