Chap_1_Complete - Introduction Whats a Computer? I An...

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1 Introduction What’s a Computer? n An electronic device: Gets Input Processes the Input Output n Example: You type an MS_Word document (Input) You click on the “Print” button (Process) The document is printed. (Output) n Why Use a Computer ? Time Accuracy Reliability
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2 Computer Structure n NB: The different components will be treated in great detail in next chapters. Computer System software Application software Input Devices The System Unit Output Devices Secondary Storage MS_Word MS_Excel Pascal ……. . Operating System (DOS, UNIX. .) BIOS …. Hardware Software
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3 The Relationship among the User and Computer Components n 4 3 n n 2 1 n Example: To manage the “ Secondary Storage ” (e.g “The Floppy Disk”), you usually use “Windows Explorer”: An application software Ε Relation_1 Hardware Application Software System Software User
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4 The Relationship among the User n W_Explorer will communicate with the appropriate “System Software” (MS_DOS) Ε Relation_3 n In its turn, The System Software (MS_DOS) communicates with the Hardware and carry out the user requests. Ε Relation_4 The user does not notice any thing.
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5 MS_DOS M icro S oft D isk O perating S ystem n Actually, you can communicate directly with the system software (e.g MS_DOS), This interaction is a Relation_2 one. n => MS_DOS commands n Commands that instruct the computer to perform certain operations (e.g: Creating new directories, copying files …)
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6 The MS_DOS Tree Structure of Directories Drives Directories / Folders Files
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MS_DOS Some Tips n Current Drive n Root n MD / Edit
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This note was uploaded on 11/04/2009 for the course SSE CSC 1400 taught by Professor Mhamdi during the Spring '09 term at Al Akhawayn University.

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Chap_1_Complete - Introduction Whats a Computer? I An...

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