( CNN ) -- Russian President Dmitri Medvedev launched a technology tour of California Wednesday morning , visiting Cisco Systems for the company 's announcement of a $ 1 billion investment in Russian projects , and sending his first Twitter message . `` Greetings to everyone , I 'm at Twitter and this is my first message , '' the Russian leader tweeted from Twitter headquarters in San Francisco . Medvedev also posted a photograph of the `` view outside my hotel window '' in San Francisco and another of himself greeting Twitter employees from the new @ KremlinRussia account . But at Cisco Systems headquarters in San Jose , Medvedev 's visit was serious business . He joined Cisco CEO John Chambers for Cisco 's announcement that it plans to invest $ 1 billion over several years in company projects aimed at developing innovation and entrepreneurship in Russia . Medvedev and Chambers also witnessed the signing of a memorandum of understanding between Cisco and the co-chairman of the high-tech innovation center Russia is planning to build in the town of Skolkovo outside of Moscow . Chambers said Cisco will bring $ 100 million in venture capital to the projected center . `` We 're all in , '' Chambers told the Russian president . Medvedev , dressed in jeans , a sport jacket and open neck shirt , is touring companies in California 's Silicon Valley . His schedule also includes Apple , and Yandex , Russia 's largest search engine . `` I want to see everything , I want to see how it works , '' he told CNN . He 's also scheduled to meet at a coffee shop with Russians working in Silicon Valley and then deliver a speech to Stanford University students . Wednesday evening he flies to Washington for Thursday meetings and lunch with President Barack Obama at the White House .
Russian President Dmitri Medvedev present for Cisco announcement . Medvedev sends first Twitter message from Twitter HQ . Cisco , Russia also ink $ 100 million deal for tech center in Sklokovo , Russia . Medvedev to meet with President Obama Thursday at the White House .