<Table> Chromebook Pixel <Tr> <Td_colspan="2"> Chromebook Pixel </Td> </Tr> <Tr> <Th> Manufacturer </Th> <Td> Google </Td> </Tr> <Tr> <Th> Type </Th> <Td> Chromebook </Td> </Tr> <Tr> <Th> Release date </Th> <Td> February 21, 2013 (2013 - 02 - 21) </Td> </Tr> <Tr> <Th> Retail availability </Th> <Td> February 21, 2013 (2013 - 02 - 21) </Td> </Tr> <Tr> <Th> Discontinued </Th> <Td> March 1, 2017 (2017 - 03 - 01) </Td> </Tr> <Tr> <Th> Operating system </Th> <Td> Chrome OS </Td> </Tr> <Tr> <Th> CPU </Th> <Td> Intel Core i5 1.8 GHz </Td> </Tr> <Tr> <Th> Memory </Th> <Td> 4 or 8 GB DDR3 RAM </Td> </Tr> <Tr> <Th> Storage </Th> <Td> 32 or 64 GB SSD </Td> </Tr> <Tr> <Th> Display </Th> <Td> 12.85 in (326 mm), 2,560 × 1,700 resolution </Td> </Tr> <Tr> <Th> Graphics </Th> <Td> Intel HD Graphics 4000 </Td> </Tr> <Tr> <Th> Successor </Th> <Td> Pixelbook </Td> </Tr> <Tr> <Th> Website </Th> <Td> pixel.google.com/chromebook-pixel/ </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Chromebook Pixel </Td> </Tr>

When did the google pixel book come out