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Graphical environment

Functions palette

The Functions palette (see [link] ) provides various function VIs or blocks to build a system. View this palette by right-clicking on an open area of a block diagram. Note that this palette can be displayed only in a block diagram.

Functions Palette

Controls palette

The Controls palette (see [link] ) features front panel controls and indicators. View this palette by right-clicking on an open area of a front panel. Note that this palette can be displayed only in a front panel.

Controls Palette

Tools palette

The Tools palette offers various mouse cursor operation modes for building or debugging a VI. The Tools palette and the frequently used tools are shown in [link] .

Tools Palette

Each tool is used for a specific task. For example, use the wiring tool to wire objects in a block diagram. If one enables the automatic tool selection mode by clicking on the Au tomatic T ool S election button, LabVIEW selects the best matching tool based on a current cursor position.

Building a front panel

In general, one constructs a VI by going back and forth between a front panel and block diagram, placing inputs/outputs on the front panel and building blocks on the block diagram.


Controls make up the inputs to a VI. Controls grouped in the Numeric Controls palette (Controls Express Num Ctrls) are used for numerical inputs, controls grouped in the Buttons&Switches palette (Controls Express Buttons) are used for Boolean inputs, and controls grouped in the Text Controls palette (Controls Express Text Ctrls) are used for text and enumeration inputs. These control options are displayed in [link] .

Control Palettes


Indicators make up the outputs of a VI. Indicators grouped in the Numeric Indicators palette (Controls Express Numeric Inds) are used for numerical outputs, indicators grouped in the LEDs palette (Controls Express LEDs) are used for Boolean outputs, indicators grouped in the Text Indicators palette (Controls Express Text Inds) are used for text outputs, and indicators grouped in the Graph Indicators palette (Controls Express Graph Indicators) are used for graphical outputs. These indicator options are displayed in [link] .

Indicator Palettes

Align, distribute and resize objects

The menu items on the front panel toolbar (see [link] ) provide options to align and orderly distribute objects on the front panel. Normally, after one places controls and indicators on a front panel, these options can be used to tidy up their appearance.

Menu to Align, Distribute, Resize and Reorder Objects

Building a block diagram

Express vi and function

Express VIs denote higher-level VIs configured to incorporate lower-level VIs or functions. These VIs are displayed as expandable nodes with a blue background. Placing an Express VI in a block diagram opens a configuration dialog window to adjust the Express VI parameters. As a result, Express VIs demand less wiring. The configuration window can be opened by double-clicking on its Express VI.

Basic operations such as addition or subtraction are represented by functions. [link] shows three examples corresponding to three block diagram objects (VI, Express VI and function).

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, An interactive approach to signals and systems laboratory. OpenStax CNX. Sep 06, 2012 Download for free at http://cnx.org/content/col10667/1.14
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