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Course: OLD 21, Spring 2009School: CSU Channel Islands
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to Introduction Computer Science I Klefstad Week 1 Hardware Model . Bits, Bytes, Words . cpus (ALUs, Registers, Bus) . Memory (RAM, ROM) . Disk . Display . Mouse . Keyboard . Network . eg Macintosh, IBM PC, Sun SPARCstation Operating Systems . Virtual Memory . Process and Resource Mgmt . Timesharing . Graphics User Interface . eg DOS, Windows95, Unix...
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to Introduction Computer Science I
Klefstad
Week 1
Hardware Model
. Bits, Bytes, Words
. cpus (ALUs, Registers, Bus)
. Memory (RAM, ROM)
. Disk
. Display
. Mouse
. Keyboard
. Network
. eg Macintosh, IBM PC, Sun SPARCstation
Operating Systems
. Virtual Memory
. Process and Resource Mgmt
. Timesharing
. Graphics User Interface
. eg DOS, Windows95, Unix
Programming Languages
. Imperative
. Functional
. Declarative
. (Object-oriented)
. Memory model: Code, Static Data, Stack, Heap
. e.g. fortran, Pascal, Ada, Prolog, Lisp, C, C++, Java
Basic Software Development Tools:
. Editor
. Compiler
. Make
. Debugger
. Email
Important Qualities to Manage Complexity
. Hierarchy
. Abstraction
. e.g. Houses, Automobiles
Software Development
. Functional Design
. Object-Oriented Design
. Goals
. Readable & Modifyable Coding Style
. Testing for Correctness (reliability)
. Adequate Efficiency
. Develop Good Documentation/Commenting Habits
Objects and Classes
. Object State
. Object Behavior
. Object Lifetimes
. Allocation
. Construction
. Destruction
. Deallocation
Designing Software Classes
With . Objects
. have three aspects:
. state (member data)
. behavior (member functions)
. identity (a name or reference)
. have a life-time
. begins with allocation (followed by construction)
. ends with deallocation (preceeded by destruction)
. three kinds of allocation (in C++)
. static
. semi-static
. dynamic
. e.g. Circle
. Classes
. Defines state and behavior for a set of similar objects
. Interface
. part accessible by users of the class
. Implementation
. part accessible by class members
. e.g. Automobile
. e.g.
class Circle
...
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