Video: Local Variable, Global Variable, and Race Conditions
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In NI LabVIEW software, the order of execution is controlled by the flow of data (data flow) though wires rather than the sequential order of commands. This allows you to create a block diagram with simultaneous (parallel) operations. When you have parallel loop structures, you cannot use wires to communicate data between the two loops because data flow prevents parallel operation. To overcome this, you must use variables. With variables, you can circumvent normal data flow by passing data from one place to another without connecting the two places with a wire. In LabVIEW, variables take many forms. This tutorial explores the local and global variable as well as race conditions, which can result from the improper use of variables.
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