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<p>developed in <a href="page.php?w=telecommunications">telecommunications</a> for <a href="page.php?w=telegraphy">telegraphy</a> systems in the late 19th century but found its most common application in <a href="page.php?w=Digital_data">digital</a> telephony in the second half of the 20th century.</p>

<p><big>History</big></p>
<p>Time-division multiplexing was first developed for applications in <a href="page.php?w=Electrical_telegraph">telegraphy</a> to route multiple transmissions simultaneously over a single transmission line. In the 1870s, <a href="page.php?w=%C3%89mile_Baudot">Émile Baudot</a></p><p>
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