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15 Cards in this Set
- Front
- Back
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What are components of a computer system?
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Internal organization, operating system, user interface
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What does the operating system do?
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manages the computer and provides user interface with hardware and software
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What is loading the operating system called?
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Booting the computer
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What types of operating systems are there?
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single program (ie DOS), multiprogramming (Windows, Unix), and multiprocessing (super computers)
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What are charateristics of single program operating systems?
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one user, one program like MS-DOS
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What are charateristics of multiprogramming or multitasking operating systems?
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one or more users, can run more then one program at a time, one processor
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What are multiprocessor operating systems?
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multiple, multiple programs, more than one processor
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What are 3 types of user interfaces?
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command line (unix, dos), menu driven, and graphical (gui)
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What is good about command line interfaces?
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small amount of memory used, quick response, easy to program in low language
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What is bad about command line interfaces?
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user must memorize commands, user can mistype commands, harder to learn
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What is good about menu driven interfaces?
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reduces user errors, hides details of inner workings of the computer, easy to program
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What is bad about menu driven interfaces?
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limits what the user can do, frustrates experienced users, must change program to add new menu items
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What is good about graphical interfaces?
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easy for beginners, pictures are easier then words to understand, uses high level languages
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What is bad about graphical interfaces?
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uses massive memory, icons can be misleading, can protect you so well that you are unable to accomplish a simple task
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What are good design guide lines?
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system should be transparent (easy to use), forgiving (errors shouldn't cause crashes), and visually oriented (pictures or easy to see)
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