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The Concept of Computer Architecture

The Concept of Computer Architecture. Evolution and interpretation levels of abstraction hierarchical framework Extensions Description of computer architectures. TECH Computer Science. CH02. Evolution of the concept of computer architecture. Computer architecture (programmer ’ s view)

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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

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