National Instruments PXI-8335, User Manual

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Glossary
PXI-PCI 8330 Series User Manual G-2 www.ni.com
C
C Celsius
clock hardware component that controls timing for reading from or writing to
groups
counter/timer a circuit that counts external pulses or clock pulses (timing)
D
device A plug-in instrument card or pad that can contain multiple channels and
conversion devices. Plug-in boards and PCMCIA cards, which connects to
your computer parallel port, are examples of devices.
digital trigger a TTL level signal having two discrete levels — a high and a low level
DMA direct memory access — a method by which data can be transferred to/from
computer memory from/to a device or memory on the bus while the
processor does something else. DMA is the fastest method of transferring
data to/from computer memory.
I
IEEE Institute of Electrical and Electronics Engineers
M
MITE MXI Interfaces To Everything — a custom ASIC designed by National
Instruments that implements the PCI bus interface. The MITE supports bus
mastering for high speed data transfers over the PCI bus.
P
PCI Peripheral Component Interconnect — a high-performance expansion bus
architecture originally developed by Intel to replace ISA and EISA. It is
achieving widespread acceptance as a standard for PCs and workstations;
it offers a theoretical maximum transfer rate of 132 Mbytes/s.