User manual

Glossary

DLL Dynamic-link library. A software module in Microsoft Windows

containing executable code and data that can be called or used by Windows

applications or other DLLs. Functions and data in a DLL are loaded and

linked at run time when they are referenced by a Windows application or

other DLLs.

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.

driver software that controls a specific hardware device such as a DAQ board or

a GPIB interface board

DSA dynamic signal acquisition

DSP digital signal processing

DSUB D-subminiature connector

EEPROM electronically erasable programmable read-only memory—ROM that can

be erased with an electrical signal and reprogrammed

EGA Enhanced Graphics Adapter

EISA Extended Industry Standard Architecture

event-driven message a message sent by an event-driven program, a program with a loop that

waits for events to occur

external trigger a voltage pulse from an external source that triggers an event such as

A/D conversion