Operating Systems: Basic Concepts and History Hardware
Evolution of Operating Systems Why do operating systems change? ¾Key functions: hardware abstraction and coordination ¾Principle: Design tradeoffs change as technology changes. Comparing computing systems from 1981 and 2007 1981 2007 Factor MIPS 1 57,000 57,000 $/SPECInt $100K $2 50,000 DRAM size 128KB 2GB 16,000 Disk size 10MB 1TB 100,000
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