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
TVNZ is still use the former channel programs). TVNZ began a teletext service in 1984 originally with the intention to help New Zealand's deaf community get improved access to news and information. A captioning service was available for certain television shows and could be accessed by browsing to page 801. The TVNZ Teletext service could be received on all TVNZ channels and the TVNZ service could be received on TV3 including captioning of some TV3 shows. Trackside also operated a Teletext service called TAB Text which only displayed the racing pages of Teletext. A Teletext capable television was usually required to