module 3 Flashcards
3 Program Structure
Sequence
Decision
Loop/Iteration
is therefore a sequence of instruction for carrying out some task step by step.
Algorithm
is a diagram representing the logical sequence in which a combination of steps or operations is to be performed.
Flowchart
a diagram that describes how an entire system operates.
System Flowchart
An entire software system is a collection of multiple programs.
Program Flowchart
represents an instruction to an input or output device
Parallelogram or Input/output symbol
represent a group of program instructions that performs
processing functions
Rectangle/ Processing Symbol
denotes a points in the program where more than one
path can be taken
Diamond/ Decision Symbol
This represent an instruction or group of instructions that will change or modify a program course of execution
Hexagon/Preparation Symbol
is used to designate the beginning and the end of the program, or the point of interruption.
Oval/ Terminal Symbol
this symbol is specialized process symbol that represent a named operation or program step not explicitly detailed in the program flowchart.
Predefined Process Symbol /Rectangle with two vertical
bars
a non processing symbol which is used to connect one part of a flowchart to another without drawing flow lines.
small circle/ on-page connector
are used to show the direction of
processing or data flow.
Flow Direction Indicators/Arrowheads
This type of connector is used instead of on-page connector to
designate entry to or exit from a page.
Off-Page Connector /Small Pentagon
are used to show reading order or sequence in which flowchart symbols are to be read.
Flow Lines (Horizontal/Vertical Lines)
