Interactive TV, pah! Ceefax is the daddy of us all and don't forget it.
From Tom Housden.
Ceefax : Colombia Space Shuttle Launch 1981
07/04/1981 © BBC
Picture shows an example of Ceefax, information about the Colombia Space Shuttle Launch. Ceefax is a form of BBC broadcasting - a complete service of News and Information, hidden inside. Ceefax is a form of BBC broadcasting - a complete service of News and Information, hidden inside your ordinary television picture. Ceefax enables you to see facts about world news, sports results, businees and travel information, quizzes and gardening tips, recipes and price guides. Ceefax is on the air on both BBC1 and BBC2, throughout the hours of television transmission, and being updated constantly.