Ports


DevX Home    Today's Headlines   Articles Archive   Tip Bank   Forums   

Results 1 to 3 of 3

Thread: Ports

  1. #1
    Bill Fosbrook Guest

    Ports


    I write software to drive thermal barcoding printers that mostly use a serial
    port connection. Serial is preferred to parallel because of it's ability
    to send data back from the printer for flow control and status functions.
    I use the standard VB comm control.

    Now I have begun to hear about two way parallel ports and also something
    caled a USB port. Can these be used in Visual Basic ?

    Share on Google+

  2. #2
    Dan Appleman Guest

    Re: Ports


    I'd say it's probably possible, but I've never done it myself. A quick look
    through MSDN didn't show
    any generic USB code, though there is a section on writing USB drivers (it's
    possible you need a
    driver to use USB).

    Dan


    "Bill Fosbrook" <billf@iafrica.com> wrote:
    >
    >I write software to drive thermal barcoding printers that mostly use a serial
    >port connection. Serial is preferred to parallel because of it's ability
    >to send data back from the printer for flow control and status functions.
    >I use the standard VB comm control.
    >
    >Now I have begun to hear about two way parallel ports and also something
    >caled a USB port. Can these be used in Visual Basic ?
    >


    Share on Google+

  3. #3
    Larry Lotito Guest

    Re: Ports


    >"Bill Fosbrook" <billf@iafrica.com> wrote:
    >>
    >>I write software to drive thermal barcoding printers that mostly use a

    serial
    >>port connection. Serial is preferred to parallel because of it's ability
    >>to send data back from the printer for flow control and status functions.....>>


    I also write printing systems software using thermal printers, and have researched
    the parallel vs. serial issue for years. The only solution I found (several
    years ago) was an assembly language routine that looked directly at the port
    and returned the control bit status to VB.

    This worked, but unfortunately the detailed status information I was looking
    for, eg. paper out, ribbon out, etc., was only provided on the serial port
    by any of the numerous thermal printers I tested. None of them provided
    this level of staus information on the parallel port.




    Share on Google+

Similar Threads

  1. Accessing COM ports
    By john_smith in forum .NET
    Replies: 1
    Last Post: 02-20-2003, 05:15 AM
  2. How to monitor which ports are being used?
    By mark erickson in forum .NET
    Replies: 4
    Last Post: 09-14-2002, 06:50 PM
  3. Assigning ports.
    By Chad in forum Java
    Replies: 0
    Last Post: 07-10-2001, 10:36 AM
  4. Serial Ports
    By Timothy Schilbach in forum VB Classic
    Replies: 2
    Last Post: 07-21-2000, 10:47 AM
  5. Serial Ports
    By Timothy Schilbach in forum VB Classic
    Replies: 0
    Last Post: 07-20-2000, 04:29 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
HTML5 Development Center
 
 
FAQ
Latest Articles
Java
.NET
XML
Database
Enterprise
Questions? Contact us.
C++
Web Development
Wireless
Latest Tips
Open Source


   Development Centers

   -- Android Development Center
   -- Cloud Development Project Center
   -- HTML5 Development Center
   -- Windows Mobile Development Center