Daktronics (R) Incorporated, founded in 1968 and based in Brookings, South Dakota, develops scoreboards, electronic display, large-screen video, and other visual communications systems. The firm's systems are employed by stadiums and for PGA and other outdoor sporting events. The company's first product, the patented Matside (R) wrestling scoreboard, was introduced in 1971. Daktronics also develops legislature voting and mass transit information displays. The company's ProStar (R) VideoPlus technology, which employs red, green, and blue LEDs, supports the large-screen display of live video, instant replays, and animation. ProStar VideoPlus supports the display of trillions of colors. Daktronics' modular displays employ microprocessors and solid-state electronics. The systems are housed in aluminum cabinets. The company also provides clients with technical support and repair services. The firm's Keyframe (SM) division offers clients video content, event management, and training services. The company works with a network of authorized service dealers across the United States. Daktronics markets its systems to commercial and government customers across 70 countries. The company employs 1,800 people, who work at its 393,000 square foot facility in South Dakota. Daktronics went public in 1994. It is listed on NASDAQ under the DAKT symbol. The firm was founded by Dr. Aelred Kurtenbach and Dr. Duane Sander.