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The Prism Modem 1000 was a dial-up modem designed to connect home microcomputers such as the BBC Micro to Prestel and Micronet 800 viewdata services. It featured a straightforward interface supporting V.23 (1200 bps download/75 bps upload), relying on a manual switch to control transmission direction, requiring users to physically toggle between “TX” and “RX” modes during a session. Our modem has the original manual and box. Manufacturer : Prism Physical Description : Cardboard box Modem Data cable Specification and Instructions for use sheets This exhibit has a reference ID of CH31828. Please quote this reference ID in any communication with the Centre for Computing History. |
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