the architecture of computer hardware and systems software:an information technology approach

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chapter 1: computer systems chapter 1: computer systems the architecture of computer hardware and systems software: an information technology approach 3rd edition, irv englander john wiley and sons 2003 wilson wong, bentley college linda senne, bentley college typical computer ad is the computer fast enough to run necessary programs? is the computer cost-effective? will it be obsolete in 6 months? why study computer architecture? user understand system capabilities and limitations make informed decisions improve communications with information technology professionals systems analyst conduct surveys, determine feasibility and define and document user requirements specify computer systems to meet application requirements programmer create efficient application software for specific processing needs why study computer architecture? system administrator / manager install, configure, maintain, and upgrade computer systems maximize system availability optimize system performance ensure system security web designer optimize customer accessibility to web services system administration of web servers select appropriate data formats design efficient …

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cessing of instructions controls movement of data within the cpu interface unit moves instructions and data between the cpu and other hardware components bus: bundle of wires that carry signals and power between different components memory also known as primary storage, working storage, and ram (random access memory) consists of bits, each of which hold a value of either 0 or 1 (8 bits = 1 byte) holds both instructions and data of a computer program (stored program concept) software component applications operating system api: application program interface file management i/o kernel memory management resource scheduling program communication security network module communications component hardware communication channels physical connections between computer systems examples: wire cable, phone lines, fiber optic cable, infrared light, radio waves interface hardware handles communication between the computer and the communication channel modem or network interface card (nic) software network protocols: http, tcp/ip, atapi computer systems all computer …

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e (mechanical computer) augusta ada byron develops many of the fundamental concepts of programming george boole invents boolean logic. modern computer development 1937: mark i is built (aiken, harvard university, ibm). first electronic computer using relays. 1939: abc is built first fully electronic digital computer. used vacuum tubes. 1943-46: eniac (mauchly, eckert, university of pennsylvania). first general purpose digital computer. 1945: von neumann architecture proposed. still the standard for present day computers. 1947: creation of transistor (bardeen, shockley, brattain, bell labs). 1951: univac. first commercially available computer. early computers babbage’s analytical engine eniac textbook overview web site: http://www.wiley.com/college/englander part 1 (chapter 1) computer system overview part 2 (chapters 2-5) number systems and data formats part 3 (chapters 6-12) computer architecture and hardware operation part 4 (chapters 13-18) software – operating systems, applications, development environments part 5 (supplementary chapters 1-3) digital logic, addressing modes, and communication channel technology copyright 2003 john …

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agement; >| kernel system a! 1/0 network drivers module | } hardware network

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chapter 1: computer systems chapter 1: computer systems the architecture of computer hardware and systems software: an information technology approach 3rd edition, irv englander john wiley and sons 2003 wilson wong, bentley college linda senne, bentley college typical computer ad is the computer fast enough to run necessary programs? is the computer cost-effective? will it be obsolete in 6 months? why study computer architecture? user understand system capabilities and limitations make informed decisions improve communications with information technology professionals systems analyst conduct surveys, determine feasibility and define and document user requirements specify computer systems to meet application requirements programmer create efficient application software for specific process...

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