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Our Lady of the Rosary College 2006-2007 S.2 Computer Literacy. Lesson 9 Central Processing Unit Mr. Ku Heung Chin. Central Processing Unit (CPU) . The “brain” of the computer Accepts and executes instructions. Control various devices in the computer system. 3 basic units in CPU.

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our lady of the rosary college 2006 2007 s 2 computer literacy

Our Lady of the Rosary College2006-2007 S.2 Computer Literacy

Lesson 9

Central Processing Unit

Mr. Ku Heung Chin

central processing unit cpu
Central Processing Unit (CPU)
  • The “brain” of the computer
  • Accepts and executes instructions.
  • Control various devices in the computer system.
3 basic units in cpu
3 basic units in CPU
  • Control Unit
    • Control all operations.
  • Arithmetic and Logic Unit (ALU)
    • Addition, subtraction, decision-making….
  • Register
    • Hold temporary data.
instruction cycle
Instruction Cycle
  • 1.Fetching
  • 2.Decoding
  • 3.Executing

1

2

3

3

clock rate
Clock Rate
  • How many instructions can a CPU runs per second
  • Unit: cycles per second Hertz (Hz)
  • E.g. 2.4 GHz
    • 2.4*1000*1000*1000

=2400000000 instructions per second.

intel and amd
Intel and AMD
  • Two major companies producing CPUs
  • Intel Corporation vs Advanced Micro Devices, Inc.
intel vs amd
Intel vs AMD
  • 1976
    • Intel 8086/8088 :5MHz
  • 1982
    • AMD became a licensed second-source manufacturer of 8086 and 8088
    • Intel 80286 : 6-25 MHz
intel vs amd1
Intel vs AMD
  • 1986
    • Intel: 80386: 16-40 MHz
  • 1990
    • Intel : 80486 : 40-100 MHz
  • 1991
    • AMD: Am386: 33-40 MHz
  • 1993
    • AMD: AM486:40-120MHz
intel vs amd2
Intel vs AMD
  • 1993
    • Intel: Pentium:60-300MHz
  • 1995
    • AMD: K5 :75-133MHz
  • 1997
    • Intel Pentium II:233-450MHz
    • AMD: K6:200-300MHz
intel vs amd3
Intel vs AMD
  • 1999
    • Intel : Pentium III:

450MHz-1.4GHz

    • AMD: Duron and Athlon(K7):

500MHz – 2GHz

intel vs amd4
Intel vs AMD
  • 2001
    • Intel : Pentium 4:

1.3GHz-3.8GHz

  • 2003
    • AMD:Athlon64

2.0GHz – 2.4GHz

intel vs amd5
Intel vs AMD
  • 2006 ( Dual Core CPU)
    • Intel: Core 2 (Duo/Quad /Extreme)
    • AMD: Athlon64 X2
intel vs amd6
Intel vs AMD
  • Who wins??
    • 2006 second quarter market share:
      • Intel 73 %
      • AMD 22%
      • Others 5%
reminders
Reminders
  • HW7
    • Due next cycle
    • Download from E-Classroom or Mr. Ku’s homepage
  • Quiz (Unit 3 and 4)
    • Cycle 17 (Starting from 2/3/2007)
the end
The End

Thanks for coming!!