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

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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!!


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