Ceefax is a revamped version of Ceefax for the Raspberry Pi computer introduced in August 2016 by Peter Kwan. To view Teefax, enthusiasts connect a Raspberry Pi running appropriate software to the signal input of a Teletext-capable TV. Kwan said: “It's like the modern-day equivalent of restoring steam engines. It's completely useless but it keeps us occupied." The service has 12 pages of up-to-date news and Kwan hopes to create an online archive of old teletext pages from Britain, Germany and France. Ceefax Ceefax was the world's first teletext information service and a forerunner to the current BBC Red Button service.
Teletext list of news headlines might appear on page 110; a teletext user would type "110" into the TV's remote control to view this page. The broadcaster constantly sends out pages in sequence. There will typically be a delay of a few seconds from requesting the page and it being broadcast and displayed, the time being entirely dependent in the number of pages being broadcast. More sophisticated receivers use a memory buffer to store some or all of the teletext pages as they are broadcast, allowing instant display from the buffer. This basic architecture separates from other digital information systems, such