[lug] Serial printer connection questions

Ed Hill ed at eh3.com
Mon Sep 16 20:33:29 MDT 2002

On Mon, 2002-09-16 at 19:19, Chip Atkinson wrote:
> Greetings,
> Does anyone have any experience with setting up serial printers?  I have a
> postscript printer that seems to get overrun with data when using the
> parallel interface so I thought I'd try the rs-232 interface instead.

Hi Chip,

I can't imagine that an RS-232 serial interface will be any faster than
the parallel port.  According to http://www.usb.org/faq/ans2.html, the
approximate max speeds are:

  serial port: 115kbits/s (.115Mbits/s)
  standard parallel port: 115kBYTES/s (.115MBYTES/s)
  Original USB: 12Mbits/s (1.5MBYTES/s)

so the parallel port should be about 8X faster than RS-232 and USB
should be about 10X faster than parallel.  Could you switch to USB?


Edward H. Hill III, PhD 
Post-Doctoral Researcher   |  Email:  ed at eh3.com,  ehill at mines.edu
Division of ESE            |  URLs:   http://www.eh3.com
Colorado School of Mines   |    http://cesep.mines.edu/people/edhill.php
Golden, CO  80401          |  Phone:  303-273-3483    Fax: 303-273-3311
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