IBM has a long history of innovation dating back to Herman Hollerith's pioneering work in data processing using punch cards. Some key innovations include magnetic storage, the System/360 mainframe, relational databases, DRAM, RISC architecture, Deep Blue, silicon germanium, and autonomic computing. IBM also pioneered open innovation through contributions to Linux and grid computing. IBM's culture of innovation is supported by its large intellectual property portfolio and many Nobel laureates and award-winning researchers on staff.