Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!portal!cup.portal.com!mmm
From: mmm@cup.portal.com (Mark Robert Thorson)
Newsgroups: sci.electronics
Subject: Re: Alphanumeric LED driver
Message-ID: <19975@cup.portal.com>
Date: 29 Jun 89 01:30:44 GMT
References: <9733@boulder.Colorado.EDU>
Distribution: na
Organization: The Portal System (TM)
Lines: 4

The simplest output (though an expensive one) is through a serial interface.
There are many LED and LCD modules which have a one-line display which
receive data as an ASCII-encoded TTL signal.  This eliminates the need for
your computer to scan the display 30 times per second.