LabVIEW
Graphical programming environment for designing automated test systems, data acquisition, and instrument control.
What it is
About LabVIEW
LabVIEW (Laboratory Virtual Instrument Engineering Workbench) is a graphical programming environment developed by National Instruments (now NI). Rather than writing text-based code, developers create programs — called Virtual Instruments (VIs) — by wiring together functional blocks on a graphical dataflow diagram (the "G" programming language). LabVIEW is purpose-built for interfacing with physical measurement hardware: it supports hundreds of measurement instruments and DAQ (data acquisition) devices through NI's hardware ecosystem (cDAQ, PXI) and industry-standard protocols (GPIB, RS-232, USB, Ethernet, VISA). It is the dominant platform for automated test equipment (ATE) in aerospace, defence, biomedical, and industrial manufacturing environments. In biomedical engineering and electronics testing, LabVIEW programs read sensor data from accelerometers, electrodes, strain gauges, or thermocouples in real time, display live waveforms on a front panel, apply signal processing (filtering, FFT, RMS calculation), log data to file, and trigger alarms or control outputs based on measurement thresholds. A biomedical engineer might use LabVIEW to test a medical device under simulated physiological conditions — applying a simulated ECG waveform to a monitor and verifying the device's alarm thresholds. An electronics engineer uses it to run automated production-line tests, acquiring measurements from hundreds of units and comparing them against a pass/fail specification. The graphical approach makes LabVIEW accessible to engineers without a software development background, but large applications can become difficult to maintain without disciplined modular design.
What you can do with it
Capabilities
Build a VI that acquires voltage data from a DAQ device, displays it as a waveform on the front panel, and calculates RMS in real time.
Program an automated test sequence that steps through a defined stimulus profile, records the device under test's response at each step, and generates a pass/fail report.
Apply a low-pass digital filter to an acquired signal using LabVIEW's signal processing palette and compare the filtered and unfiltered waveforms.
Control a bench instrument (oscilloscope, signal generator) via GPIB or USB-VISA and automate a measurement sequence that would take hours to perform manually.
Log acquired measurement data to a TDMS file and export it to Excel or MATLAB for further analysis.
How to learn it
Learning Resources
NI Learning Centre (ni.com/en/shop/services/education.html) — free LabVIEW Core 1 and Core 2 online courses (official NI curriculum)
LabVIEW Community Edition — free for non-commercial use at ni.com; download and start building VIs immediately
NI Developer Zone (forums.ni.com) — community forums with example code and troubleshooting
Clad.io — exam preparation for the Certified LabVIEW Associate Developer (CLAD) certification
Pro Tip
Design your front panel before writing a single wire on the block diagram. LabVIEW's power is the interactive front panel — if you do not know what data you need to display and what controls you need to operate, the block diagram will grow without direction. UI-first forces disciplined thinking about what the VI is actually for.
Skills that use this tool
Roles that use this tool
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