C64 decoder

Bildschirmtext (German "screen text", abbrev. BTX) was a V.23 online service launched in West Germany in 1983 by the Deutsche Bundespost, the (West) German postal service. Btx originally required special hardware, which had to be bought or rented at the post office. The data was transmitted through the telephone network and the content was displayed on a television set. Jump to: navigation, search Image File history File links Btx. ... Jump to: navigation, search Image File history File links Btx. ... Close_up of C64 Commodore 64 (C64, CBM 64) was a popular home computer of the 1980s. ... V.23 is an ITU-T recommendation for half-duplex communication between two analogue dial-up modems using FSK modulation at up to 600 or 1200 bauds to carry digital data at up to 600 or 1200 bit/s respectively. ... An online service provider is an entity which provides a service online. ... Jump to: navigation, search 1983 is a common year starting on Saturday of the Gregorian calendar. ... Jump to: navigation, search Deutsche Bundespost (The Federal Post Office) was created 1947 as a successor of the realm post office. ... A British pillar box The postal system is a system by which written documents typically enclosed in envelopes, and also small packages containing other matter, are delivered to destinations around the world. ... A telephone handset A touch-tone telephone dial Telephone The telephone or phone (Greek: tele = far away and phone = voice) is a telecommunications device that transmits speech by means of electric signals. ...

Like the French Minitel, Btx originally used the CEPT standard. Later it was switched to the backward-compatible KIT standard, which however never really became accepted. CEPT permits the transmission of graphical pages with a resolution of 480 by 250 pixels, where 32 out of a palette of 4096 colors could be shown at the same time. This corresponds to the technical possibilities of the early 80's. Minitel 1. ... The European Conference of Postal and Telecommunications Administrations (CEPT) was established on June 26, 1959 as a coordinating body for European state telecommunications and postal organizations. ...

Btx always transferred whole screen pages; the receiver paid per received page. The content provider was free to set the price, and could require either a fee per page (0.01 DM to 9.99), or a time-dependent fee (0.01 DM to 1.30 DM per minute). A 10 Deutsche Mark banknote from Germany 1993 showing Carl Friedrich Gauss (http://www. ...

The last Btx access was switched off at the end of 2001 by Deutsche Telekom; it had been made obsolete by the Internet. Jump to: navigation, search 2001: A Space Odyssey. ... This article needs to be cleaned up to conform to a higher standard of quality. ...

After German reunification, Btx was available throughout Germany. Btx was also available in Austria and Switzerland, where it was called Videotex (VTX). Jump to: navigation, search German reunification (Deutsche Wiedervereinigung) took place on October 3, 1990, when the areas of the former German Democratic Republic (GDR, in English often called East Germany) were incorporated into the Federal Republic of Germany (FRG, or West Germany). After the GDRs first free elections on...