Start>>Programs>>National Instruments LabVIEW 6i orb StartProgramsNational Instruments>>LabVIEW 6>>LabVIEW. LabVIEW software (without hardware) is also available in the CADLab (Room 2243). KEY CONCEPTS 2 *Italicized text throughout this document denotes a key concept which is defined below. block diagram Pictorial description or representation of a program or algorithm. In G, the block diagram, which consists of executable icons called nodes and wires that carry data between the nodes, is the source code for the VI. The block diagram resides in the diagram window of the VI. 1 Paragraph excerpts from LabVIEW—Proven Productivity (April 2000), National Instruments Corporation. 2 Key concept descriptions are taken from LabVIEW User Manual Glossary (July 2000) and G Programming