It's the Micro Bit's launch day. About one million schoolchildren are getting a free mini-computer as part of a coding initiative spearheaded by the BBC. But delays to the roll-out mean it may not have the impact desired. Rory will be doing a live Q&A on Facebook shortly after 1330GMT. In the meantime, read about what it can be used for: http://www.bbc.co.uk/news/technology-35824446 | BBC Technology News