http://www.wired.com/thisdayintech/2010/03/0308doug-ross-director-tape/
1978 – The first radio episode of The Hitchhiker’s Guide to the Galaxy, by Douglas Adams, was transmitted on BBC Radio 4. Some credit Adams with accidentally predicting the PDA and smartphone.
http://entertainment.howstuffworks.com/hitchhikers-history1.htm
1979 – Philips publicly demonstrated a prototype of an optical digital audio disc at a press conference called “Philips Introduces Compact Disc.”
http://www.ieeeghn.org/wiki/index.php/Milestones:Compact_Disc_Audio_Player,_1979
Read Tom’s science fiction and other fiction books at Merritt’s Books site.