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Additional Exercises for Making Decisions in a VI

Module by: National Instruments. E-mail the author

Exercise 1

Build a VI that uses the Formula Node to calculate the following equations: y 1 =x3+x2+5 y 1 x 3 x 2 5 y 2 =m⁢x+b y 2 m x b

Use only one Formula Node for both equations and use a semicolon (;) after each equation in the node.

Save the VI as Equations.vi in the C:\Exercises\LabVIEW Basics I directory.

Exercise 2

Build a VI that functions like a calculator. On the front panel, use numeric controls to input two numbers and a numeric indicator to display the result of the operation (Add, Subtract, Divide, or Multiply) that the VI performs on the two numbers. Use a slide control to specify the operation to perform.

Save the VI as Calculator.vi in the C:\Exercises\LabVIEW Basics I directory.

Exercise 3

Modify the Square Root VI so the VI performs all calculations and condition checking using the Formula Node.

Select File>>Save As to save the VI as Square Root 2.vi in the C:\Exercises\LabVIEW Basics I directory.

Exercise 4

Build a VI that has two inputs, Threshold and Input Array, and one output, Output Array. Output Array contains values from Input Array that are greater than Threshold.

Save the VI as Array Over Threshold.vi in the C:\Exercises\LabVIEW Basics I directory.

Create another VI that generates an array of random numbers between 0 and 1 and uses the Array Over Threshold VI to output an array with the values greater than 0.5.

Save the VI as Using Array Over Threshold.vi in the C:\Exercises\LabVIEW Basics I directory.

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