Recording Information (Flow Charts)

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An excerpt of "System Analysis" which explains program flowcharts, system flowcharts & DFDs with examples.

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Recording Information (Flow Charts)

  1. 1. Flow Chart
  2. 2. • Flowcharts were introduced by Frank Gilberth in 1921, and they were called “Process Flow Charts” at the beginning . Allan H. Mogensen is credited with training business people on the use of Flowcharts. Wikipedia has a great summary about the history of flowcharts, read more in this wiki section.
  3. 3. • A flowchart is a type of diagram that represents an algorithm or process, showing the steps as boxes of various kinds, and their order by connecting them with arrows. This diagrammatic representation illustrates a solution to a given problem. Process operations are represented in these boxes, and arrows; rather, they are implied by the sequencing of operations. Flowcharts are used in analyzing, designing, documenting or managing a process or program in various fields.
  4. 4. Data Document Stored Data Predefined Process Process Start/Stop Manual Input Sequential Access Storage Decision Direct Access Storage Internal Storage Manual Operation
  5. 5. Vacancy arose in one of the leading companies around. The board of directors have arranged a meeting to decide how will they’ll recruit a new employee; internally or externally.
  6. 6. Program flowchart focuses on the process of solving the corresponding problem. It gives explicit details on how many data input, the process being done and the data output.
  7. 7. START Job Description Externally? Job Specification Does it Match the Job Specification Interview the Candidate Read CV/Resume Is he/she Suitable for the Job Publish on Web (Advertise) Vacancy Filled STOP
  8. 8. System flowchart, on the other hand, focuses on the input & output rather than the detailed process itself. It’s more simpler than program flow chart in terms of details but it does show how data is being input and output.
  9. 9. Job Description & Specification Recruitment & Selection CV/Resume New Employee's Data
  10. 10. Recruitment & Selection
  11. 11. Data flow diagram is different from the two flowcharts we dealt with earlier. This diagram illustrates data and how does it flow from one field to another. This diagram, obviously, focuses on the data.
  12. 12. Firm’s Website Firm Advertisement Process Newspaper
  13. 13. Advertisement Process

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