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Chapter 12
Case and Sequence Structures and the Formula Node
© National Instruments Corporation
12-3
Block Diagram
2.
Build the diagram as shown in the following illustration.
3.
Place a Case structure in the block diagram by selecting it from 
Functions»Structures. The Case structure is a resizable box that is 
not dropped on the diagram immediately. Instead, you have the chance 
to position it and resize it. To do so, click in an area above and to the 
left of all the terminals you want to be inside the Case structure. 
Continue holding down the mouse button and drag out a rectangle that 
encompasses the terminals.
Greater Or Equal To 0? function (Functions»Comparison)—Returns 
a TRUE if the number input is greater than or equal to 0.
Square Root function (Functions»Numeric)—Returns the square 
root of the input number.
Numeric Constant (Functions»Numeric)—In this activity, the 
constant indicates the numeric value of the error.
Selection
Terminal