BBC Micro depth, resolution and memory economy. In the first models, the OS and applications were left with the RAM left over from the display mode. Mode 7 was a Teletext mode, extremely economical on memory and an original requirement due to the BBC's own use of broadcast teletext (Ceefax). It also made the computer useful as a Prestel terminal. The teletext characters were generated on board, for use with monitors and TV sets without a Teletext receiver. Train time displays at UK stations were driven by BBC Master computers in this mode until around the late 1990s. Mode 7 used only
Teletext Ltd. editorial on ch 986 on Freesat. The GameCentral section continued online on the Teletext website before joining another DMGT website Metro and can now be found at http://www.metro.co.uk/tech/games/ Despite the withdrawal of news and information content, the service continued to broadcast. On 29 January 2010, the broadcasting regulator Ofcom revoked Teletext's licence to broadcast but as of the service was still on the air. On 27 May 2010, Ofcom imposed a financial penalty of £225,000 on Teletext Limited following the revocation of the public teletext service licence. Ofcom regulations state: "Public service broadcasting licences are offered for a fixed term,