National Instruments none P

Glossary

PCI Peripheral Component Interconnect. High-performance expansion bus

architecture commonly found in PCs.

PID Proportional-Integral-Derivative. A three-term control mechanism

combining proportional, integral, and derivative control. You might use a

PID algorithm to control processes such as heating and cooling systems,

fluid level monitoring, flow control, and pressure control.

plot 1. Trace (data line) on a graph representing the data in one row or column

of an array.

2. To display a new set of data while deleting any previous data on the

graph.

point Structure that contains two 16-bit integers that represent horizontal and

vertical coordinates.

postback The process in which a Web page sends data back to the same page on the

server.

property Attribute that defines the appearance or state of an object. The property can

be a specific value or another object with its own properties and methods.

For example, a value property is the color (property) of a plot (object),

while an object property is a specific Y axis (property) on a graph (object).

The Y axis itself is another object with properties, such as minimum and

maximum values.

property editor A control used to configure properties for Windows Forms controls at run

time.

property pages Window or dialog box that displays current configuration information and

allows users to modify the configuration.

PXI PCI eXtensions for Instrumentation. Rugg ed, open platform for modular

instrumentation with specialized mechanical, electrical, and software

features. Refer to www.pxisa.org for more information.