National Instruments Corporation, or NI , is an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 company with over 5,000 employees and direct operations in 41 countries. Headquartered in Austin, Texas

Austin, Texas

Austin is the capital city of the U.S. state of :Texas and the seat of Travis County. Located in Central Texas on the eastern edge of the American Southwest, it is the fourth-largest city in Texas and the 14th most populous city in the United States. It was the third-fastest-growing large city in...

, it is a producer of automated test equipment and virtual instrumentation

Virtual instrumentation

Virtual instrumentation is the use of customizable software and modular measurement hardware to create user-defined measurement systems, called virtual instruments....

 software. Their software products include LabVIEW

LabVIEW

LabVIEW is a system design platform and development environment for a visual programming language from National Instruments. LabVIEW provides engineers and scientists with the tools needed to create and deploy measurement and control systems.The graphical language is named "G"...

, a graphical development environment, LabWindows/CVI

LabWindows/CVI

LabWindows/CVI is an event-driven, ANSI C programming environment developed by National Instruments. The program was originally released as LabWindows for DOS in 1987, but was soon reinvisioned for the Microsoft Windows platform...

, which provides VI tools for C

C (programming language)

C is a general-purpose computer programming language developed between 1969 and 1973 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system....

, TestStand, a test sequencing and management environment, and Multisim

MultiSIM

NI Multisim is an electronic schematic capture and simulation program which is part of a suite of circuit design programs, along with NI Ultiboard. Multisim is one of the few circuit design programs to employ the original Berkeley SPICE based software simulation...

 (formerly Electronics Workbench

Electronics Workbench

The National Instruments Electronics Workbench Group is responsible for innovating the electronic circuit design software NI Multisim and NI Ultiboard, which was previously a Canada-based company that first produced MultiSIM, and integrated ULTIboard with it....

), an electrical circuit analysis program.