Weekly videos on computing and related topics. ExplainingComputers is produced and presented by Christopher Barnatt, who spent 25 years teaching computing and future studies in the University of Nottingham, and who is the author of thirteen books including "Digital Genesis: The Future of Computing, Robots and AI", "3D Printing: Third Edition" and "The Next Big Thing". If you are looking to purchase my books or some of the hardware items that I use in my videos, I have created Amazon Storefronts (US & UK) that are linked below, with the US one also in the right of the channel banner. Please note that as an Amazon Associate I earn a commission from any qualifying purchases you may make. Please note that the e-mail address below really is for business enquiries only. If you want to contact me on another matter, please do so via a video comment. Due to the volume of communications I receive, I cannot offer a free technical support service via e-mail.