ITM 207 Lecture Notes - Lecture 7: Visual Programming Language, Computer Memory

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Visual programming development environment based on flowcharts. Minimizes the amount of syntax you must learn to write correct program instructions. Visual; diagrams that are executes one symbol at a time. Flowchart: a collection of connected graphic symbols where each symbol represents a specific type of instruction to be executed. Connection between symbols determine the order of execution. Variables: computer memory locations that hold a data value. Can only hold a single value but this value can vary. A variable can have its value set (or changed) in three ways: value entered from input statement, value calculated from an equation in an assignment statement, return value from a procedure call. Three types of general comments in raptor: programmer header. Documents who wrote the program, when it was written and a general description of what the program does; add to start symbol: section description. Mark major sections of program to make it easier to understand: logic description.

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