Central Processing Unit

Central Processing Unit

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  A PRESENTATION ON CPU(CENTRAL PROCESSING UNIT) Alaka Acharya 20C
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  CPU • Introduction • CPUStructure • Types of processors(Single and multi core) • Types of architecture(RISC and CISC) • Hyper threading and Turbo boosting technology • Computing/storage platforms
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  Introduction • The hardwarethat executes programs and manages rest of the computer system • Often known as ‘brains’ of the computer where most calculations take place. • First developed at Intel with in the early 1970's • This is intel 4004:
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  CPU structure
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  Types of processors: •Single core processors: • One core on a CPU chip • No so good at multi-tasking • Multi core processors: • More than one cores on a CPU chip • Each core executes a task independently • More efficient on multi-tasking • Multi core processors are widely used now-a-days
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  Types of processerarchitecture: • Reduced instruction set computer(RISC): • Uses simple instructions that can be divide into multiple instructions which perform low-level operation within single clock cycle • Complex instruction set computers(CISC): • Single instructions can execute several low-level operations or are capable of multi-step operations or addressing modes within single instructions
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  Types of processerarchitecture: • RISC vs. CISC CISC RISC Complex instructions Reduced instructions Sophisticated decoding Faster decoding Instructions take longer to execute Instructions take faster to execute Complex hardware requirement Simple hardware requirement PDP-11, VAX, Motorola 68k, Intel x86. Atmel AVR, PIC, ARM Decreases memory cost More memory required
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  • Hyper threadingtechnology: • A processor with HTT consists of two logical processors(not actual) • Not the same as doubling core • Enables multiple threads to run on each core • Increases power consumption, heat output • Turbo-boosting technology: • Enables the processor to run above its rated operating frequency • Considers workload and operating environment. • Continuous turbo boost can decrease processor life
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  Computing/storage platforms • Cloudcomputing: • Internet based computing • Storing data and applications on remote servers and accessing them via the internet rather than saving on your hard drive • More scalable, reliable, secure and less expensive • Google drive, Microsoft onedrive, and even Facebook, YouTube are the examples. • Grid Computing • Distributed architecture of large numbers of computers connected to solve a complex problem. • Used for special projects, researches • OurGrid, World Computing Grid, TeraGrid
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  • Distributed computing: •Is to solve a single large problem by breaking it down into several tasks where each task is computed in the individual computers of the distributed system.
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  THANK YOU!