SIMPLEX PRINTER
\sˈɪmplɛks pɹˈɪntə], \sˈɪmplɛks pɹˈɪntə], \s_ˈɪ_m_p_l_ɛ_k_s p_ɹ_ˈɪ_n_t_ə]\
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A term applied by Western Union TelegraphCompany to teletypewriters that are not part of amultiplex system. They usually provided for alternatetransmission in both directions. If working simplex orhalf-duplex, what was keyed in at the keyboard would betyped out at the printing portion. If working full-duplex,sending would be blind as the printing portion was being usedonly for reception.
By Denis Howe
