Virtual instruments (VIs) contain three main components-the
front panel, the block diagram, and the icon and connectorpane.
The front panel is the user interface of a VI and specifies
the inputs and displays the outputs of the VI.
The block diagram contains the graphical source code
composed of nodes, terminals, and wires.
Use the
Tools palette to create, modify, and
debug VIs. Press the
Shift key and right-click
to display a temporary version of the
Tools palette at the location of the cursor.
Use the
Controls palette to place controls and
indicators on the front panel. Right-click an open space onthe front panel to display the
Controls palette.
Use the
Functions palette to place VIs and
functions on the block diagram. Right-click an open space onthe block diagram to display the
Functions palette.
Use the
Search button on the
Controls and
Functions palettes to
search for controls, VIs, and functions.
All LabVIEW objects and empty space on the front panel and
block diagram have associated shortcut menus, which youaccess by right-clicking an object, the front panel, or the
block diagram.
Use the
Help menu to display the
Context
Help window and the
LabVIEW Help , which
describes most palettes, menus, tools, VIs, functions, andfeatures.
Select
Help>>Search the LabVIEW Bookshelf to
display the
LabVIEW Bookshelf , which you can
use to search PDF versions of all the LabVIEW manuals and
Application Notes .
You build the front panel with controls and indicators,
which are the interactive input and output terminals of theVI, respectively.
Control terminals have a thicker border than indicator
terminals. To change a control to an indicator or to changean indicator to a control, right-click the object and select
Change to Indicator or
Change to
Control from the shortcut menu.
The block diagram is composed of nodes, terminals, and
wires.
The broken
Run button appears on the toolbar to
indicate the VI is broken. Click the broken
Run button to display the
Error list window, which
lists all the errors.
Use execution highlighting, single-stepping, probes, and
breakpoints to debug VIs by animating the flow of datathrough the block diagram.
Tips and tricks
Operating
Frequently used menu options have equivalent keyboard
shortcuts. For example, to save a VI, you can select
File>>Save or press the
Ctrl-S keys. Common keyboard shortcuts include the following:
Ctrl-r
Runs a VI.
Ctrl-e
Toggles between the front panel and block diagram.
Ctrl-h
Toggles display of the
Context Help window.
Ctrl-b
Removes all broken wires.
Ctrl-f
Finds VIs, globals, functions, text,
or other objects loaded in memory or in a specified listof VIs.
To increment or decrement numeric controls faster, use the
Operating or
Labeling tools to
place the cursor in the control and press the
Shift key while pressing the up or down arrow
keys.
You can disable the debugging tools to reduce memory
requirements and to increase performance slightly. Select
File>>VI Properties , select
Execution from the top pull-down menu, and
remove the checkmark from the
Allow Debugging checkbox.
Wiring
Click the
Show Context Help Window button on
the toolbar to display the
Context Help window. Use the
Context Help window to
determine which terminals are required. Required terminalsare bold, recommended connections are plain text, and
optional connections are dimmed.
Press the spacebar to toggle the wire direction.
To move objects one pixel, press the arrow keys. To move
objects several pixels, press the
Shift key
while you press the arrow keys.
To cancel a wire you started, press the
Esc key, right-click, or click the terminal where you started
the wire.
Use the tip strips that appear as you move the
Wiring tool over terminals.
Display the connector pane by right-clicking the node and
selecting
Visible Items>>Terminals from the
shortcut menu.
You can bend a wire by clicking to tack the wire down and
moving the cursor in a perpendicular direction. To tackdown a wire and break it, double-click.
1. Tack Down a Wire by Clicking,
2. Tack and Break the Wire by Double-clicking
Editing
Use the following shortcuts to create constants, controls, and
indicators:
Right-click a function terminal and select
Create>>Constant ,
Create>>Control , or
Create>>Indicator from the shortcut menu.
Drag controls and indicators from the front panel to
the block diagram to create a constant.
Drag constants from the block diagram to the front
panel to create a control.
To duplicate an object, press the
Ctrl key
while using the Positioning tool to click and drag aselection.
To restrict an object's direction of movement horizontally
or vertically, use the
Positioning tool to
select the object and press the
Shift key
while you move the object.
To keep an object proportional to its original size as you
resize it, press the
Shift key while you drag
the resizing handles or circles.
To resize an object as you place it on the front panel,
press the
Ctrl key while you click to place
the object and drag the resizing handles or circles.
To replace nodes, right-click the node and select
Replace from the shortcut menu.
To display the block diagram of a subVI from the calling
VI, press the
Ctrl key and use the
Operating or
Positioning tool to
double-click the subVI on the block diagram.
To display the front panel of a subVI from the calling VI,
use the
Operating or Positioning tool to
double-click the subVI on the block diagram. You also canselect
Browse>>This VI's SubVIs .
After you type a label, press the
Enter key
to end text entry.
To add items quickly to ring controls and
Case structures, press the
Shift-Enter keys after each item. Pressing
Shift-Enter accepts the item and positions
the cursor to add the next item. Refer to
Making Decisions in a VI for more
information about
Case structures.
To copy the color of one object and transfer it to a
second object without using a color picker, use the
Color Copy tool to click the object whose
color you want to copy. Use the
Coloring tool
to click the object to which you want to apply thecolor. You also can copy the color of one object by using
the
Coloring tool and pressing the
Ctrl key.
Select
Edit>>Undo if you make a mistake.
To create more blank space on the block diagram, press the
Ctrl key while you use the
Positioning tool to draw a rectangle on the
block diagram.
Debugging
When single-stepping, use the following keyboard shortcuts:
Ctrl-down arrow
Steps into a node.
Ctrl-right arrow
Steps over a node.
Ctrl-up arrow
Steps out of a node.
Questions & Answers
differentiate between demand and supply
giving examples
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
When MP₁ becomes negative, TP start to decline.
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 •
Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 •
Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Economic growth as an increase in the production and consumption of goods and services within an economy.but
Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has
The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50.
A,Calculate quantities of x and y which maximize utility.
B,Calculate value of Lagrange multiplier.
C,Calculate quantities of X and Y consumed with a given price.
D,alculate optimum level of output .
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
