Complex sentence: Intel demonstrated the first working 32 nm processor on February 10,2009, and started selling its 32 nm processors on January 7,2010 as Core i3, Core i5, and the dual-core mobile Core i7.
Split into simpler sentences: Intel demonstrated the first working 32 nm processor on February 10,2009. Intel started selling its 32 nm processors on January 7,2010 as Core i3, Core i5, and dual-core mobile Core i7.