| A flow chart helps in showing the sequence of different approaches in solving a problem. Flow chart is very concise in nature. It identifies steps needed in solving a problem and shows these steps with connecting lines and arrows to indicate the order in which the steps are performed.
FLOWCHARTING SYMBOLS
INPUT/OUTPUT FLOW LINES HARD DISK PROCESSING SYMBOL DECISION BOX FLOPPY DISK FOW CHART CONNECTOR MERGE COLLATE EXTRACT TERMINA SYMBOL SORT DISPLAY DESCRIPTION OF EACH SYMBOLSInput symbol means the feeding of data and output symbol means print out of the data or display on computer screen.
Note: we can print the value of ‘a’ after feeding the values of ‘b’ and ‘c’ FLOW LINES: Flow lines are used to connect various symbols i.e. it shows the flow of logics. PROCESSING SYMBOL: Represents the processing of data DECISION BOXFalse(No) IS A1 > A2 True(Yes) Here A1 represent area of a rectangle and A2 represent area of a square. The decision symbol defines logical operation with the result of decision (with true / false or Yes/ No).
CONNECTOR SYMBOLConnector symbol is used for the purpose of junction. Sometimes the flow chart can’t be completed on a single page and it requires two or more pages, then the connector symbol is used to indicate another page.
PREPARE/ INITIALISEThese symbols are used to initialize constants and variables that will be used by the program. A flowchart always starts with START and ends with STOP as shown in examples below. Flowchart to calculate and print 60% of 450 Naira
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ASSESSMENT |
1. Draw a flow chart to calculate the area of a square with sides 10cm each and give reasons why you use a symbol in all your steps
Student are allowed to give corrections to the assessment given by the teacher ,while the teacher support s them in order to guide them |
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See also