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NI-DAQ FRM for PC Compatibles) G-6
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National Instruments Corporation
Glossary
handle pointer to a pointer to a block of memory; handles reference arrays and
strings. An array of strings is a handle to a block of memory containing
handles to strings.
handshaked digital I/O a type of digital acquisition/generation where a device or module accepts
or transfers data after a digital pulse has been received. Also called latched
digital I/O.
hardware the physical components of a computer system, such as the circuit boards,
plug-in boards, chassis, enclosures, peripherals, and cables
hardware triggering a form of triggering where you set the start time of an acquisition and gather
data at a known position in time relative to a trigger signal
hex hexadecimal
Hz hertz
I
ID identification
IDE integrated development environment
IEEE Institute of Electrical and Electronics Engineers
instrument driver a set of high-level software functions that controls a specific GPIB, VXI,
or RS-232 programmable instrument or a specific plug-in DAQ board.
Instrument drivers are available in several forms, ranging from a function
callable language to a virtual instrument (VI) in LabVIEW.
interrupt a computer signal indicating that the CPU should suspend its current task
to service a designated activity
interrupt level the relative priority at which a device can interrupt
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
IRQ interrupt request
ISA Industry Standard Architecture