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Graphical Programming Languages Lecture 19: Supporting Material Dr Kathryn Merrick Thursday 21 st May, 2009

Graphical Programming Languages Lecture 19: Supporting Material Dr Kathryn Merrick Thursday 21 st May, 2009. Overview. Graphical programming languages: Variables, types, values, operators Flow of control Built-in functions Strengths and limitations.

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Graphical Programming Languages Lecture 19: Supporting Material Dr Kathryn Merrick Thursday 21 st May, 2009

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  1. Graphical Programming Languages Lecture 19: Supporting Material Dr Kathryn Merrick Thursday 21st May, 2009

  2. Overview • Graphical programming languages: • Variables, types, values, operators • Flow of control • Built-in functions • Strengths and limitations

  3. Lego Mindstorms NXT: Programmable Robots Programmable Brick

  4. The NXT Programming Environment The programming window

  5. Built-in Functions ‘Move’ functions connected up like Lego bricks Input parameters set here

  6. Loops Instructions to be repeated will be dragged into here Loop connected up like a Lego brick Exit condition (can behave like a for loop or a while loop)

  7. Selection What to do will be dragged into here Selection connected up like a Lego brick Conditions set here

  8. A Complete Program

  9. Demo 1: Programming a Lego scorpion

  10. Variables Variable brick

  11. Maths Operators Maths operator brick

  12. Boolean Operators Boolean operator brick

  13. Complete Program

  14. Demo 2: Programming a Lego scorpion

  15. Summary • After today’s lecture you should be able to: • Identify the key programming tools we used in MATLAB in the NXT graphical language • Appreciate the strengths and weaknesses of graphical languages

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