#OnThisDay 1978: Ceefax Is Here went behind the scenes of everybody's favourite teletext information service. BBC Archive loves the naturalistic conversations captured in this piece. | BBC Archive

#OnThisDay 1974: CEEFAX - the world's first teletext service - went live, with a whopping 30 pages of information at your fingertips. In 1972, BBC science correspondent David Wilson chatted to project lead Stanley Edwardson about this newfangled interactive service, and got a sneak peak at a CEEFAX prototype. | BBC Archive

#OnThisDay 1974: #Ceefax ("see facts" get it?) was introduced! Please don your low res shades and enjoy this brief look back at the pioneering service. | BBC Archive

#OnThisDay 1975: This is Ceefax took a look behind the scenes of everybody's soon-to-be favourite teletext information service. | BBC Archive