Presentation
- 1. PRESENTATIO N ON FLOWCHARTS Made by: Simranjit Singh CSE-2nd Shift 115360
- 2. FLOW CHART • An flow chart is a type of diagram that represents an algorithm or process, showing the steps as boxes of various kinds and their order by connecting these with arrows.
- 3. USES…. • Flow chart are used in designing and documenting complex processes. • Like other types of diagrams, they help to visualize what is going on and thereby help the viewer to understand the process.
- 4. TYPES… • Document flowcharts, showing control over a document-flow over a system. • Data flowcharts, showing control over a data-flow in a system. • System flowcharts showing control at a physical or resource level. • Program flowchart, showing the controls in a program within a system.
- 5. Flowchart Symbols… Name Symbol Use in Flowchart Oval Denotes the beginning or end of the program Parallelogram Denotes an input operation Rectangle Denotes a process to be carried out e.g. addition, subtraction, division etc. Diamond Denotes a decision (or branch) to be made. The program should continue along one of two routes. (e.g. IF/THEN/ELSE) Hybrid Denotes an output operation Flow line Denotes the direction of logic flow in the program
- 6. SYMBOLS • TERMINATOR: An oval flowchart shape indicating the start or end of the process. • PROCESS: An rectangular flowchart shape indicating a normal process flow step. • DECISION: A diamond flow chart shape indication a branch in the process flow. • CONNECTOR: A small, labeled circular flow chart shape used to indicate a jump in the process flow. • DATA: A parallelogram that indicates data input or output ( I/O) for the process. • DOCUMENT: Used to indicate a document or report.
- 7. DATA FLOW EXTENSIONS… • A document represented as a rectangle with a wavy base. • A manual input represented by a quadrilateral. • A data file represented by a cylinder. • A manual operation represented by a trapezoid.
- 8. ADVANTAGES… • COMMUNICATION. • EFFECTIVE ANALYSIS. • PROPER DOCUMENTATION. • EFFICIENT CODING. • PROPER DEBUGGING.
- 9. LIMITATIONS… • COMPLEX LOGIC. • ALTERATIONS AND MODIFICATIONS. • THE ESSENTIALS OF WHAT IS DONE CAN EASILY BE LOST IN THE TECHNICAL DETAILS OF HOW IT IS DONE.
- 10. LAMP FLOWCHART…
- 11. A flowchart representing for computing factorial…
- 12. Flow chart showing driving to a goal…
- 13. Flow chart for finding out the largest of 3 numbers…
- 14. Flowchart to find the sum of first 50 natural numbers…
- 15. Example… START Input M1,M2,M3,M4 Step 1: Input M1,M2,M3,M4 Step 2: GRADE ← (M1+M2+M3+M4)/4 Step 3: if (GRADE <50) then GRADE←(M1+M2+M3+M4)/4 Print “FAIL” else Print “PASS” N Y endif IS GRADE<50 PRINT PRINT “FAIL” “PASS” STOP
- 16. EXAMPLE…
- 17. EXAMPLE…
- 18. Thanks A lot For Watching 06/03/2012