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			<title>Apple III Serial Port: Pinouts (6/94)</title><body class="ac-gn-current-support">
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<h1 id="main-title">Apple III Serial Port: Pinouts (6/94)</h1>
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<div id="intro-container"><div class="truncate"><div class="attr SYMPTOMS"><div class="attr TOPIC"><FONT SIZE=4>This article provides the pinouts and signal descriptions for the Apple /// serial port.<BR>
<BR>
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DB 25<BR>
Connector     Signal Name<BR>
 <BR>
 1  ...... Frame Ground<BR>
 2  ...... Transmit Data            (Tx)<BR>
 3  ...... Receive Data             (Rx)<BR>
 4  ...... Request to send          (RTS)<BR>
 5  ...... Clear To Send            (CTS)<BR>
 6  ...... Data Set Ready           (DSR)<BR>
 7  ...... Signal Ground<BR>
 8  ...... Data Carrier Detect      (DCD)<BR>
 19 ...... Secondary Clear To Send  (SCTS)<BR>
 20 ...... Data Terminal Ready      (DTR)<BR>
<BR>
Article Change History:<BR>
27 Jun 1994 - Revised formatting, revised title.<BR>
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<div class="mod-date">Published Date: Feb 18, 2012</div>
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