
Via
Web Curios, we are referred to a rather stupendous
gallery of screen-grabs of broadcast teletext pages (
see previously), first introduced in 1974 in data hidden in the signals at the extremes of the TV screen, with an assortment of nostalgic advertisements, closed-captions, games, viewing guides, alpha-mosaic art and news supplements whose rollout preceded and provisioned the internet with this ASCII grid of twenty-four by forty characters with some limited interactive capabilities (in partnership with a phone call usually) accessed by remote control. I remember exploring occasionally these embedded channels (which are mostly still available and offer programme synopses and transcripts) when the parallel online world was not so readily accessible.
synchronoptica