Tech-Nel DM-321D V21 Data Modem
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The Tech-Nel DM-321D V21 Data Modem was a compact, standalone device designed for asynchronous data communication over standard telephone lines, operating at speeds up to 300 baud in compliance with the CCITT V.21 protocol. Manufactured by Tech-Nel Data Products based in Banbury, UK. Date : UnknownManufacturer : Tech-Nel Format : Modem Physical Description : Cardboard sleeve, Cardboard inner sleeve, Modem This exhibit has a reference ID of CH55883. Please quote this reference ID in any communication with the Centre for Computing History. |
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