Computer Organization and Assembly Language
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Consists of Two Parts Computer organization Components in a computer How each component operates and how are they designed ? Hardware in low gate-level PowerPoint PPT Presentation

Computer Organization and Assembly Language. Consists of Two Parts Computer organization Components in a computer How each component operates and how are they designed ? Hardware in low gate-level Assembly Language Language manipulating computer components

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Consists of Two Parts Computer organization Components in a computer How each component operates and how are they designed ? Hardware in low gate-level

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Consists of two parts computer organization

Computer Organization and Assembly Language

  • Consists of Two Parts

    • Computer organization

      • Components in a computer

      • How each component operates and how are they designed ?

      • Hardware in low gate-level

    • Assembly Language

      • Language manipulating computer components

      • Use MIPS in this course with a preview of Intel assembly

        • C = A+B

        • L $t1, A

        • L$t2, B

        • ADD$t3, $t1, $t2

        • STC, $t3

  • Reference

    • David Patterson, John Hennessy, "Computer Organization and Design: The Hardware/Software Interface," 3rd ed., 2007 Morgan Kaufmann Pub

    • http://www.cs.uml.edu/~kim/203/HP_AppB.pdf


Consists of two parts computer organization

  • What are components in a computer ?

    • Hardware: Central Processing Unit (CPU) and Memory

    • Software: Operating System

      • A large program that manages hardware resources

  • Von Neumann Architecture

    • Stored-program (1943)

      • Keep program instructions

      • and data in the same memory

      • Self-modifying program

    • Control unit becomes the brain


Consists of two parts computer organization

  • CPU

    • Execute instructions

    • ALU (Arithmetic & Logic Unit),

    • Control Unit

    • Clock speed determines how

    • fast instructions can be

    • Word size (a.k.a. data width):

    • 32-bit vs. 64-bit

    • Memory

    • Random Access Memory (RAM)

    • Long-term memory (CD, flash, hard drive)


Consists of two parts computer organization

Boolean Algebra (Logic)

  • Developed by George Boole in 1840’s

  • A logical calculus of two values (F/T, 0/1,..)

  • Numerical operations replaced by logical operations

    • Boolean operation can be described by a truth table

  • x+y (addition) -------------- x+y (x ^ y: disjunction, or)

  • xy (multiplication) --------- xy (x y: conjunction, and)

  • -x (negation) ---------------- ^x (complement)

  • F 0 1

  • -------------------------

  • 0 0 0

  • 1 0 1


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