the FM music synthesis algorithm in 1967, and Stanford later licensed it to Yamaha Corporation. Google – Google began in January 1996 as a research project by Larry Page and Sergey Brin when they were both PhD students at Stanford. They were working on the Stanford Digital Library Project (SDLP) which is started in 1999. The SDLP's goal was "to develop the enabling technologies for a single, integrated and universal digital library" and it was funded through the National Science Foundation, among other federal agencies. Klystron tube – invented by the brothers Russell and Sigurd Varian at Stanford. Their prototype was completed and demonstrated successfully on August 30, 1937. Upon publication in 1939, news of the klystron immediately influenced the work of U.S. and UK researchers working on radar equipment. RISC – ARPA funded VLSI project of microprocessor design. Stanford and UC Berkeley are most associated with the popularization of this concept. The Stanford MIPS would go on to be commercialized as the successful MIPS architecture, while Berkeley RISC gave its name to the entire concept, commercialized as the SPARC. Another success from this era were IBM's efforts that eventually led to the IBM POWER instruction set architecture, PowerPC, and Power ISA. As these projects matured, a wide variety of similar designs flourished in the late 1980s and especially the early 1990s, representing a major force in the Unix workstation market as well as embedded processors in laser printers, routers and similar products. SUN workstation – Andy Bechtolsheim designed the SUN workstation, for the Stanford University Network communications project as a personal CAD workstation, which led to Sun Microsystems. Businesses and entrepreneurship Stanford is one of the most successful universities in creating companies and licensing its inventions to existing companies, and it is often considered a model for technology transfer. Stanford's Office of Technology Licensing is responsible for commercializing university research, intellectual property, and university-developed projects. The university is described as having a strong venture culture in which students are encouraged, and often funded, to launch their own companies. Companies founded by Stanford alumni generate more than $2.7 trillion in annual revenue and have created some 5.4 million jobs since the 1930s. When combined, these companies would form the tenth-largest economy in the world. Some companies closely associated with Stanford and their connections include: Hewlett-Packard, 1939: co-founders William R. Hewlett (B.S, PhD) and David Packard (M.S) Silicon Graphics, 1981: co-founders