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The Concept of Computer Architecture

The Concept of Computer Architecture

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The Concept of Computer Architecture

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  1. The Concept of Computer Architecture • Evolution and interpretation • levels of abstraction • hierarchical framework • Extensions • Description of computer architectures TECH Computer Science CH02

  2. Evolution of the concept ofcomputer architecture • Computer architecture (programmer’s view) • the structure of a computer that a machine language programmer must understand to write a correct (timing independent) program for the machine • Computer organization (implementer’s view) • actual hardware structure and realization • hierarchical, multilevel description • electronic circuit, logic design, programming, processor-memory-switch • functional specification and hardware implementation

  3. Recent interpretation of the concept • Computer architecture • Underlying computational model • von Neumann, dataflow, … • Level of consideration • micromachine, processor, computer system • Scope of interest • functional specification, implementation

  4. The concept of computer architecture • as a Multilevel hierarchical framework • See fig. 2.10

  5. Hierarchical description of digital systems • 1. operating system • 2. Computer system • 3. Processor • 4. functional block • 5. circuit • 6. circuit elements

  6. Description of computer architectures • informal description • Formal description • description by ADLs (VHDL) • description by a design space using DS-trees

  7. A brief overview of general purpose ADLs • VHDL • Very high speed integrated circuits Hardware Definition Language • formal description used by simulation tools • circuit, logic, functional, algorithmic, architectural

  8. The design space and its representation Using DS-trees • A “consists of” B and C • A “can be performed by” B or C • A “can be executively performed by” B or C