OPERATING SYSTEMS people unica it

Operating Systems People Unica It-Free PDF

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Components,coordination and control of the,use of the computer resources. Giorgio Giacinto 2019 Operating Systems 2,Organization. Giorgio Giacinto 2019 Operating Systems 3,Invention that brought about desktop and handheld. Contains a processor on a single chip,Microprocessor Fastest general purpose processors. Multiprocessors, Each chip socket contains multiple processors cores.
Giorgio Giacinto 2019 Operating Systems 4, Efficient computation on arrays of data using Single. Instruction Multiple Data SIMD techniques pioneered. in supercomputers, Processing No longer used just for rendering advanced graphics. Units GPU s Also used for general numerical processing. Physics simulations for games,Computations for complex machine learning models. Giorgio Giacinto 2019 Operating Systems 5,Streaming signals such as audio or video. Digital Signal Used to be embedded in I O devices like modems. Processors Are now becoming first class computational devices. especially in handhelds,Encoding decoding speech and video codecs.
Provide support for encryption and security,Giorgio Giacinto 2019 Operating Systems 6. To satisfy the requirements of handheld devices the. classic microprocessor is giving way to the SoC,On the same chip. System on a not only the CPUs and caches,Chip SoC but also. I O devices such as codecs and radios,Giorgio Giacinto 2019 Operating Systems 7. This is the core component of a computer system,Each component reads from and writes to the main.
Main Memory, The CPU can only execute instructions that are already. stored in the main memory,Giorgio Giacinto 2019 Operating Systems 8. Direct access location independent,RAM and DRAM Dynamic Random Access Memory. ROM Read Only Memory to store instructions and, Main Memory data do not have to be frequently modified. Organization Memory organization, An array of cells with equal fixed size called word.
Each memory cell has an associated address i e the. position in the array,Giorgio Giacinto 2019 Operating Systems 9. load address, Transfer the content of the memory cell identified by. address into one of the CPU registers,Access store address. Transfer the content of one of the CPU registers into. the memory cell identified by address,Giorgio Giacinto 2019 Operating Systems 10. Fetch Stage Execute Stage,Fetch Next Execute,START HALT.
Instruction Instruction,Instruction,Execution Von Neumann Architecture. Cycle The processor Figure,fetches1 2 the,Basicnext instruction. Instruction Cycle from the,memory address stored in Program Counter PC. After the fetch phase the Program Counter is,incremented by 1 unit. Giorgio Giacinto 2019 Operating Systems 11,CPU Main Memory.
PC MAR Bus,Instruction,Instruction,Instruction,CPU Registers I O Module n 2. PC Program counter,Buffers IR Instruction register. MAR Memory address register,MBR Memory buffer register. I O AR Input output address register,I O BR Input output buffer register. Figure 1 1 Computer Components Top Level View,Giorgio Giacinto 2019 Operating Systems 12.
Fetch Stage Execute Stage,Memory CPU Registers Memory CPU Registers. 300 1 9 4 0 3 0 0 PC 300 1 9 4 0 3 0 1 PC,301 5 9 4 1 AC 301 5 9 4 1 0 0 0 3 AC. 302 2 9 4 1 1 9 4 0 IR 302 2 9 4 1 1 9 4 0 IR,940 0 0 0 3 940 0 0 0 3. 941 0 0 0 2 941 0 0 0 2,Step 1 Step 2, An Example of Memory CPU Registers Memory CPU Registers. 300 1 9 4 0 3 0 1 PC 300 1 9 4 0 3 0 2 PC,the execution 301 5 9 4 1.
302 2 9 4 1,0 0 0 3 AC 301 5 9 4 1,5 9 4 1 IR 302 2 9 4 1. 0 0 0 5 AC,5 9 4 1 IR,of the sum of,940 0 0 0 3 940 0 0 0 3 3 2 5. 941 0 0 0 2 941 0 0 0 2,two numbers Step 3 Step 4,Memory CPU Registers Memory CPU Registers. 300 1 9 4 0 3 0 2 PC 300 1 9 4 0 3 0 3 PC,301 5 9 4 1 0 0 0 5 AC 301 5 9 4 1 0 0 0 5 AC. 302 2 9 4 1 2 9 4 1 IR 302 2 9 4 1 2 9 4 1 IR,940 0 0 0 3 940 0 0 0 3.
941 0 0 0 2 941 0 0 0 5,Step 5 Step 6,Giorgio Giacinto 2019 Operating Systems 13. In principle all the instructions and data of the, programs in execution should be stored in the main. Which size for memory,the main However, The memory size is usually limited by cost constraints. The technology used to fabricate the main memory does. not support permanent storage,Giorgio Giacinto 2019 Operating Systems 14. Me oard Ca,Sto boar e,The Memory rag d C D R W,Hierarchy DV lu R.
Sto f line ticT,Giorgio Giacinto 2019 Operating Systems 15. OPERATING SYSTEMS COMPUTER ARCHITECTURES Components of a computing system Giorgio Giacinto 2019 coordination and control of the use of the computer resources Operating Systems 2 Computer System Organization Giorgio Giacinto 2019 Operating Systems 3 Microprocessor Invention that brought about desktop and handheld computing Contains a processor on a single chip Fastest general purpose

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