W01-01_SysOrganization+Ch01

W01-01_SysOrganization+Ch01 - Computer Science 230:...

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Computer Science 230: omputer Architecture and Assembly Computer Architecture and Assembly Language Background: Computer Organization and Systems
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What Exactly are? Computer architecture: Computer organization: deals with the functional behavior of a computer system as viewed by a deals with structural relationships that are not visible to the programmer programmer e.g. the size of a data type e.g. clock frequency or the size of the physical – 32 bits to an integer memory There are Many Levels at which to consider architecture: highest level Î where the user is running programs lowest level Î circuits
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Levels of Machine Organization igh level Languages, User Applications ssembly Language, Machine Code High level Languages, User Applications ontrol (e.g. atapath bus, microprogramming) Assembly Language, Machine Code unctional Units (e.g. Memory, ALU, peripherals) Control (e.g. datapath, bus, microprogramming) ransistors, Wires, Gates Functional Units (e.g. Memory, ALU, peripherals) Transistors, Wires, Gates
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A Typical Computer System omputer case source http://www baber com/cases/mpe md14 silver htm (Computer case source http://www.baber.com/cases/mpe_md14_silver.htm. Motherboard source ftp://ftp.tyan.com/img_mobo/i_s2895.tif)
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What is a microprocessor? A processor is built from a large number it 16 it 32 it : of integrated circuits. ± 8-bit, 16-bit, 32-bit : refers to number of bits manipulated in one operation (usually the A microprocessor is a processor packaged as a single IC Integrated Circuit = chip). size of the registers). ± It requires external memory to execute (Integrated Circuit chip). programs. ± It cannot directly interface to I/O A microcomputer is a computer that uses a devices, thus peripheral chips are needed. microprocessor as its CPU.
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The Motherboard •An AMD Opteron 200 based motherboard. Source: Courtesy Tyan Computer Corp. (USA).
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The von Neumann Model Arithmetic nd Logic Unit and Logic Unit Processor Input Unit Output Unit Control Unit nput Memory 1. Input 2. Output 3. ALU 4. Control Unit Unit 5. Memory unit 1-14
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The System Bus Model: Refining the von eumann model Neumann model ± CPU (ALU and control), memory, and an input/output unit.
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W01-01_SysOrganization+Ch01 - Computer Science 230:...

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