Teletext

Teletext offers one-directional data transmission, broadcast via television signal.

Most commonly, Teletext decoders are built-in in (newer) television sets. Aside from that, there have been also Teletext interfaces for computers.

• Teletext adaptor Teletext Adaptor (Microtext Ltd.)
• Volex TTX 2000a Teletext-Telesoftware Adaptor (Volex Electronics)

Telesoftware was as service that allowed to download computer software, encoded in Teletext pages. Although no longer supported, Telesoftware recordings may be still found on VHS Video Cassettes.

• CEEFAX - The British BBC CEEFAX supported Telesoftware from 1983 to 1989 (mainly for BBC computers).

• ORACLE - The British Channel 4 ORACLE also supported Telesoftware (for different systems, including Amstrad. According to a , ORACLE also worked on broadcasting CP/M software).

Here are few Teletext screenshots (not CPC screenshots, on CPC the font may have looked different, matching the standard 200 lines resolution).

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  CEEFAX News

• 

  CEEFAX Weather

• 

  CEEFAX Telesoftware (fragment of a listing)

• 

  ORACLE Farewell

• Wikipedia: Teletext

• Wikipedia: Telesoftware

• Teletext Screenshots
• Telesoftware Screenshots