National Instruments NI-IMAQ User Manual

Page 46

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Glossary

NI-IMAQ for IEEE-1394 Cameras User Manual

G-4

ni.com

I

I/O

Input/output. The transfer of data to/from a computer system involving
communications channels, operator interface devices, and/or data
acquisition and control interfaces.

IEEE

Institute of Electrical and Electronics Engineers.

instrument driver

A set of high-level software functions, such as NI-IMAQ, that control
specific plug-in computer boards. Instrument drivers are available in
several forms, ranging from a function callable from a programming
language to a virtual instrument (VI) in LabVIEW.

interlaced

A video frame composed of two interleaved fields. The number of lines in
a field are half the number of lines in an interlaced frame.

interpreter

A software utility that executes source code from a high-level language
such as Basic, C or Pascal, by reading one line at a time and executing the
specified operation. See also

compiler

.

K

k

Kilo. The standard metric prefix for 1,000, or 10

3

, used with units of

measure such as volts, hertz, and meters.

K

Kilo. The prefix for 1,024, or 2

10

, used with B in quantifying data or

computer memory.

kbytes/s

A unit for data transfer that means 1,000 or 10

3

bytes/s.

Kword

1,024 words of memory.

L

library

A file containing compiled object modules, each comprised of one of more
functions, that can be linked to other object modules that make use of these
functions.

line count

The total number of horizontal lines in the picture.

LSB

Least significant bit.

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