Computer

1
Computer

• What are they?
• ??????????????????????????????????????????????????
  ????????????????? ?????????????? ??
  ?????????????????? ???? Input ?????????????
  ????????????????????????? ?????????????????
  ????????????????????? (output) ???????????????????
  ? ????????????????????
• How do they work ?
• ??????????????????????????????????????????????????
  ????????? ???? ??????????? ??????? ???? Software
  ??????? ???????????????????????????????? ?
  ??????????????? ?? ???????????????????? ????
  Program ??????????????????? ???? ?
  ??????????????????????????????????????????????????
  ??? ????????????????????????????
  ???????????????????????????????????????
  ????????????????????? ???????????

2
???????????????

• 1. ?????????????
• ??? ??????? (Equipment) ???? ?
  ???????????????????????????
• ??? ?????? ?????????????????????
  ??????????????
• ????????????? (Input)
• ?????????????????? (System Unit)
• ?????????????? (Secondary Storage)
• ?????????? (Output)

Information Processing Cycle Input
Process Output Storage
3
???????????????

• 2. ????????????? (Software)
• System Software ???????????
• Application Software ???????????????
• Application Software Package
• Customized Software

4
???????????????

• 3. ?????????? (Data)
• 4. ?????????????????? (Personel)
• Users --gt Computer Expert

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

6
???????? Supercomputer

• Digital Equipment Corporation AlphaServer 8400
  5/625 14 DEC Alpha 21164 612.8 MHz scalar
  processors
• The 5/440 models (14 CPUs, 437 MHz) can be
  clustered to form a 64 CPU unit doing 24.700
  GFLOPS.
• ????? http//www.geocities.com/Athens/6270/super
  p.html

7
?????????????????? PC

• Workstation High Performance PC (CPU,Display,
  Storage)
• Desktop
• Laptop
• Notebook
• Sub- Notebook
• Palmtop

8
Generation of Computer

• First Generation (1945-1956)
• Second Generation Computers (1956-1963)
• Third Generation Computers (1964-1971)
• Fourth Generation (1971-Present)
• Fifth Generation (Present and Beyond)

9
??????????????????????

• 1. ????????
• 2. ??????????
• 3. ???????????????
• 4. ???????????
• Computer Literacy - ??????????????????????????????
  ?? ????????????????????????????????????????
  ?????????????????????????????????????????
  ??????????????????????????????????????????????????
  ???

10
?????????????????????????????????

• 1. ????? Technology
• ???????????????? ???? ???????????????????????
  ????????????????????????????????????
  ??????????????????? ??????????????????????
• 2. ????? Methodology ( ???? ??? Re-engineering)
• ??????????????????????????????????????????????????
  ?? ?????????? ????????????????
• ????????????????? ??????????? ???????????????????
  ?? ????????????
• 3. ????? Architecture
• ???????????????????????????? ??????????????????
  ??? ???????????????????????????????? ???
  ????????????????
• ????????????????????????????????????????? ???
  ?????????????? ???????????