CSCI109.docx - Jan 11 CSCI109 Computer any device that...

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01/11/2016 ° Jan 11 CSCI109 ° ° Computer : any device that transform information ° ° Information : we can use data, information, representation, symbols, knowledge interchangeably ° ° Compute : convert one body of information to another ° ° Computing the fourth scientific domain ° ° Metascience expression language to talk about sciences ° Initials of Physical, Life, Social, Computing ° ° Dyadic computing C+P C+L C+S C+C ° ° Polyadic computing Computing plus at least two additional domains ° ° C/P computation implemented on the physical domain ° Physical domain bringing computation into effect
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° ° Implementation: bring into effect ° ° Strong AI vs Weak AI A computer can be intelligent A computer can act intelligent Simulation: act as if Lower case letter for domain initials p l s c delta for simulation Upper case for true implementation/ambiguity Computer Networking C(+S) ° Ecology P+L ° ° Neural networks C+L °
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° Teaching chemistry P+S Havok physics engine C+P Quantum computing C+P Program: sequence of instructions CPU Controller o Read instruction from memory o Direct ALU to perform some arithmetic o Transfer data o Prepare for next instruction o Send directive to input or output device Arithmetic and logic unit (ALU) o Performs an arithmetic operation on the contents of registers o Perform a logical operation on the contents of registers Improving the CPU
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Faster clock Specialized ALU Multiprocessing (multiple CPUs in parallel) Streamlining controller ALU cooperation (pipelining) More complex ALU instructions CPU Storage Linear ordering o Each stored item has a number o To retrieve an item you have to know its number o Retrieval is by address ° ° Memory split into RAM and disk RAM is faster and more expensive than disk Volatile – memory is erased when power is turned off o RAM o Registers Disk: non-volatile memory o Memory intact even when power turned off o Secondary storage Cache: small, fast memory between registers and RAM.
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