Engin112-F07-L39-ALU - Engin112 Lecture 39 Arithmetic Logic...

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Maciej Ciesielski Department of Electrical and Computer Engineering 12/12/2007 Engin112 – Lecture 39 Arithmetic Logic Unit (ALU) 12/12/2007 Engin 112 - Intro to ECE 2 Recap from last lecture RTL Design y Example: sequential multiplier Today’s lecture y Arithmetic Logic Unit (ALU) y Basic microprocessor
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12/12/2007 Engin 112 - Intro to ECE 3 Design Automation RTL-based design is automated (synthesis & verification tools) Design & simulation Verification Synthesis 12/12/2007 Engin 112 - Intro to ECE 4 Arithmetic and Logic Operations Arithmetic and logic operations are very common y ALU, central component of computer system Components of computer system: y Memory (for data and program) y Input and output y Processing unit Minimum functionality? y Addition and subtraction y Logic functions (e.g., for conditional processing) Any conceivable function can be implemented with very simple functions (“Turing completeness”) y Necessary to allow for “loops” in control
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12/12/2007 Engin 112 - Intro to ECE 5 Arithmetic Logic Unit (ALU)
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