?????????????????????? (Computer Architecture)

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?????????????????????? (Computer Architecture)
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????? 3?????????????????????????????????????????
?????????????? (ALU)
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??????????????????????????????????

• ALU ??????????????????????????????????????????????
  ????????????????? ???????????????????????????????
  ???????????????????????????? ????????????? ALU
  ????????????????????? ????????????????? ALU
  ?????????????????? (Control Unit) ??????????
  ??????????? ????????????????/???????? ??? 3.1
  ????????? ALU ????????????????????????????????????
  ???? ????????????????????????????????????? ALU
  ?????????????????????????????????????????? ALU
  ????????????????????????????? ????????????????????
  ????????????????????????????? ???????????????????
  ???????????????????????????????????????

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ALU
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????????????????????????

• ??? sign-and-magnitude
• 21 00010101
• -21 10010101 sign-and-magnitude
• ??? 2s complement
• 21 00010101 2s complement
• 11101010 ???????????????
• 1
• -21 11101011

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??????????????

• ??? 2s complement
• - ??????? a-b a(-b)
• - ??????????? ??????????????????????????????

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??????????????

• ??? 1s complement
• - ?????????????????? ?????????????????????????????
  ???

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??????

• ?????????????????????????
• - ???????????????????????????????????????
• - ?????????????????????????????????????????????
• - ???????????????????

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??????

• ?????????????????????? (???)

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??????

• ?????????????????????? (??)

???
??? (?????????????)
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??????

• ?????????????????

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??????
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??????
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(No Transcript)
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(No Transcript)
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????????????????????

• ????????????? 0
• ????????????????????????????
• ????????????????????????????? (Mantissa)
• ?????????????????????????

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?????????????????????????????????? (Z lt--X-Y)
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???????????????
????????????????????????????? (Z lt--X x Y)
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???????????????
????????????????????????????? (Z lt--X / Y)
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Haft Adder ??? Full Adder
???????????????????????????? 2 ???
?????????????????????? 2 ???
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Haft Adder ??? Full Adder
????????????????????????? 3 ??? (2 ?????????????)
???????????? Full Adder
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Haft Adder ??? Full Adder
???? Full Adder ?????????? Haft Adder 2 ???
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Ripple-Carry Adder
Ripple-Carry Adder (???? 4 ???)
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Ripple-Carry Adder
?????????? 16 ??????????????????????????????
Ripple-Carry Adder 4 ???
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Full Subtractor
??????????????????????????????? Full Subtractor
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Ripple-Borrow Subtractor
Ripple-Borrow Subtractor
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Ripple-Borrow Subtractor
????????? 16 ??????????????????????????????
Ripple-Borrow Subtractor 4 ???
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????????????
????????????
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Carry-Lookahead
Full Adder ?????????????????????????????? (G)
???????????? (P) ??????????? Carry-Lookahead
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Carry-Lookahead
Full Adder ?????? Carry-Lookahead ??? Full Adder
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Serial Multiplier
Serial Multiplier
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???????????????????? Serial Multiplier
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Array Multiplier
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Serial Divider
Serial Divider
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???????????????????? Serial Divider
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Combination ALU
Combination ALU
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Sequential ALU
Addition AC AC DR Subtraction AC AC
DR Multiplication AC.MQ DR x MQ Division AC.MQ
MQ/DR AND AC AC AND DR OR AC AC OR
DR EX-OR AC AC XOR DR NOT AC NOT(AC)
Sequential ALU