Introduction [Computer Organization and Architecture]

•Architecture is those attributes visible to the programmer

—Instruction set, number of bits used for data representation, I/O mechanisms, addressing techniques.

—e.g. Is there a multiply instruction?

•Organization is how features are implemented

—Control signals, interfaces, memory technology.

—e.g. Is there a hardware multiply unit or is it done by repeated addition?

•All Intel x86 family share the same basic architecture

•The IBM System/370 family share the same basic architecture

•This gives code compatibility

—At least backwards

•Organization differs between different versions

Structure & Function

•Structure is the way in which components relate to each other

•Function is the operation of individual components as part of the structure

Functional View

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