National Instruments Declares Quarterly Dividend

AUSTIN, Texas - July 27, 2006 - The National Instruments (NASDAQ: NATI) Board of Directors declared a dividend of 6 cents per share on its common stock payable on Aug. 28, 2006, to shareholders of record on Aug. 7, 2006.

About National Instruments
For 30 years, National Instruments (www.ni.com) has been a technology pioneer and leader in virtual instrumentation - a revolutionary concept that has changed the way engineers and scientists in industry, government and academia approach measurement and automation. Leveraging PCs and commercial technologies, virtual instrumentation increases productivity and lowers costs for test, control and design applications through easy-to-integrate software, such as NI LabVIEW, and modular measurement and control hardware for PXI, PCI, PCI Express, USB and Ethernet. Headquartered in Austin, Texas, NI has more than 3,900 employees and direct operations in nearly 40 countries. For the past seven years, FORTUNE magazine has named NI one of the 100 best companies to work for in America. Readers may obtain investment information from the company's investor relations department by calling (512) 683-5090, e-mailing nati@ni.com or visiting www.ni.com/nati.

LabVIEW, NI and ni.com are trademarks of National Instruments. Other product and company names listed are trademarks or trade names of their respective companies.