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National Instruments Low-Cost Multifunction I/O Board for ISA Lab-PC+ User Manual

Page 196

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Glossary

Lab-PC+ User Manual

Glossary-2

© National Instruments Corporation

NRSE

non-referenced single-ended

PPI

programmable peripheral interface

ppm

parts per million

PS/2

IBM Personal System/2

R

EXT

external resistance

RSE

referenced single-ended

RTSI

Real-Time System Integration

s

seconds

SCXI

Signal Conditioning eXtensions for Instrumentation (bus)

SDK

System Development Kit

STC

system timing controller

TTL

transistor-to-transistor logic

V

volts

VDC

volts direct current

V

EXT

external volts

V

IH

volts, input high

V

IL

volts, input low

Vin

volts in

V

OH

volts, output high

V

OL

volts, output low

V

out

output voltage

V

ref

reference voltage