JSS2: COMPUTER STUDIES - 1ST TERM
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Computer Software | Week 14 Topics|1 Quiz
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Operating System | Week 29 Topics|1 Quiz
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Four Good Definitions of Computer Program
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Operating System
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Translators & Utility Programs
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Advantages of Operating System
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Functions of Operating System
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Classification of Operating Systems
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Examples and Uses of Operating Systems
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Advantages of Windows Over Earlier Operating Systems
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GUI And Command-Line (CLI) O/S
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Four Good Definitions of Computer Program
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Computer Memory: Primary And Secondary Memory | Week 35 Topics|1 Quiz
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Computer Memory II: Secondary Memory (Backing Storage) | Week 42 Topics|1 Quiz
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Number System I | Week 54 Topics|1 Quiz
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Number System II | Week 63 Topics|1 Quiz
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Units of Storage In Computer | Week 72 Topics|1 Quiz
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Problem Solving Skills With Computer | Week 85 Topics|1 Quiz
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Computer Programming Languages | Week 93 Topics|1 Quiz
Quizzes
Flowchart
Topic Content:
- Meaning of Flow Chart
- Flow Chart Symbols
- Flow Chart Example

What is a Flow Chart?
A flow chart is a diagrammatic representation of an algorithm, that is, it is a visual picture, which gives the steps of an algorithm, and also the flow of control between the various steps.
It is a diagram or map showing the steps taken to reach a certain result. It can show how information moves from one part of a computer system to another.
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. In other words, a flow chart contains boxes of different shapes, connected by lines (or arrows)
The two most common types of boxes in a flowchart are the processing step, usually called activity and denoted as a rectangular box, and the decision step usually denoted as a diamond.
Flow Chart Symbols:
Symbol | Name | Function |
![]() | Start/End | An oval represents a start or end point |
![]() | Arrow | Shows relationships between shapes |
![]() | Input/Output | A parallelogram represents input/output |
![]() | Process | Processing step denoted as a rectangle |
![]() | Decision | Decision step denoted as a diamond or rhombus |
Activity:
Create a flow chart to prepare white rice from the algorithm in the previous topic.
- Start.
- Light the stove or gas cooker.
- Place a clean pot on it.
- Put a desired quantity of water in it.
- Check if the water is boiling, if yes, go to step 6 Otherwise, repeat step 4 until the water is boiling.
- Pour washed rice into the pot.
- Boil it until you are satisfied.
- Stop/End.
