To celebrate Sir Clive Sinclair's 80th birthday this month, this is part one of three of our mini documentary series chronicling his inventions and career.
From his early years and inventions, we look at from where his career started.
Featuring videos and pictures from our volunteer Leigh's archive in this video.
Video created by Leigh Thompson.
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After loads of testing a Gremlin popped up and decided our viewers on mobiles would have some sound missing.
Leigh has chased the Gremlin away and got back the missing audio, here is the link for the updated version for our mobile friends.