- race condition
Refers to an undesirable scenario, whereby two tasks (e.g., two While Loops) read from and write to shared data (e.g., a local variable), without appropriate synchronization, so that the state of the shared data depends on which tasks complete execution first. Often this results in shared data that gets overwritten and behavior that is non-deterministic.
- radio buttons
A control having multiple Booleans, where only one of the Booleans may be TRUE.
- radix
A display setting for integer numerics that shows the base system: Decimal, Hex, Octal, Binary...
- read mode
A mode of structure or function (such as a Local Variable, Property Node, or Shared Variable) where it is configured to read a value. See also Write Mode.
- recommended input
A SubVI or function input that is recommended to be wired. See also: Required Input, Optional Input.
- reentrant execution
Mode in which calls to multiple instances of a subVI can execute in parallel with distinct and separate data storage. See also: Reentrant VI, Clone.
- Reentrant VI
A VI that is configured for Reentrant Execution. See also Reentrant Execution.
- regular expression
A special syntax for describing a set of (string) character sequences. Regular expressions are used by the Match Pattern and Match Regular Expression functions.
- remote panel
A VI Front Panel that is being displayed on a (remote) computer other than the computer where the VI is actually executing.
- rendezvous
A LabVIEW messaging construct that is generally used to synchronize parallel tasks, having them wait until all parallel tasks finish and "meet" to wait for each other at the rendezvous. The Rendezvous Functions are used to create and use Rendezvous.
- Report Generation VIs
A set of LabVIEW VIs used for generating and printing reports.
- representation
Subtype of the numeric data type, of which there are signed and unsigned byte, word, and long integers, as well as single-, double-, and extended-precision floating-point numbers, both real and complex.
- required input
A SubVI or function input that is required to be wired, otherwise the calling VI will be broken. See also: Recommended Input, Optional Input.
- resizing handles
Angled handles on the corner of objects that indicate resizing points.
- ring control
Special numeric control that associates 32-bit integers, starting at 0 and increasing sequentially, with a series of text labels or graphics.
- RS-232
Recommended Standard #232. A standard proposed by the Instrument Society of America for serial communications. It's used interchangeably with the term "serial communication," although serial communications more generally refers to communicating one bit at a time. A few other standards you might see are RS-485, RS-422, and RS-423.
- RSE
Referenced single-ended.
- RSE Measurement
All measurements are made with respect to a common ground; also known as a grounded measurement.
|
