Glossary
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National Instruments Corporation
system RAM
RAM installed on a personal computer and used by the operating system,
as contrasted with onboard RAM
T
transfer rate
the rate, measured in bytes/s, at which data is moved from source to
destination after software initialization and set up operations; the maximum
rate at which the hardware can operate
TTL
transistor-transistor logic
typ
typical
U
update
the output equivalent of a scan. One or more analog or digital output
samples. Typically, the number of output samples in an update is equal to
the number of channels in the output group. For example, one pulse from
the update clock produces one update which sends one new sample to every
analog output channel in the group.
V
V
volts
VDC
volts direct current
VI
Virtual Instrument—(1) a combination of hardware and/or software
elements, typically used with a PC, that has the functionality of a classic
stand-alone instrument (2) a LabVIEW software module (VI), which
consists of a front panel user interface and a block diagram program
W
W
watts
