The serial interface or serial port, also known as RS-232 is a communication port used to connect modems, mouses, some printers, scanners and other hardware equipment.

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“mount” a serial port or USB or PS/2 or parallel port on a local machine over TCP/IP

let's assume I have two boxes, both running some (any) unix variant. I have root privileges on both boxes and they are networked together. I'm using A, the other is B. I'd like to "mount" the ports ...
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How can I send data to the serial port from a Linux shell?

I need to find the linux way of running the following DOS commands: MODE COM1: 9600,N,8,1,P COPY FIRMWARE.COD COM1 Is this possible? I know COM1 in Linux is /dev/ttyS0 but that's about it. How do ...
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Is there a limit to the number of USB to RS-232 ports my computer can support?

I am looking to get a whole bunch of digital output pins that I can directly control from my CPU and I am hoping to use a whole bunch of USB to serial ports to achieve this. Assuming I am using a ...
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Why are some PCs losing data coming on over USB serial?

I have an embedded device that connects to a PC using USB and enumerates as a USB serial port. The device spits out approximately 30 megabytes of data over a period of about 15 minutes. My PC is ...
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XP to XP link with SLIP over serial - No IP address on host computer side?

I'm trying to set up a SLIP link using a serial connection between two XP computers. This is to test some specialized communications hardware that only supports IP via SLIP. As a starting point, I'm ...
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Serial port access errors in WINE

I have a setup in which I use a USB serial adapter + some application which sends and receives data using that serial usb. But this setup which works on a Windows, or even in a VMWare Virtual windows, ...
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Dell Optiplex 755 - serial port driver for windows 7 64bit

I have a dell optiplex 755 (tower), it was shipped originally with vista but was recently reinstalled using Windows 7, 64 bit. THe serial port driver, and something else called "PCI Simple ...
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Serial port RS-232 and Security

If I have a device connected to serial port RS-232 on my computer and an application that is communicating with it. How secure is this? Can another application communicate with the device at the same ...
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How to use IrDA adapter as serial port?

I remember back in windows 98 era that you could install IrDA adapter and associate serial port with it so it would work just like rs-232 to infra-red adapter. Is such thing possible on windows 7? Is ...
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Display Hex in PuTTY for Serial

Does anyone know if there is a way to get PuTTY to show the hex values of what it's receiving over a serial connection instead of characters?
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Multi serial devices on one port

I am developing one software for managing parking lot. System is designed to use four HID RFID devices for authorization clients on gates. Each device should be connected to server by Serial port ...
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Is there another way to connect to a LinkSys SRW2024 switch from CentOS?

I am configuring a Linksys SRW2024 and accidently changed the management VLAN before changing the VLAN configuration. Thus, I can no longer access it. The only way I have read to get into it now is ...
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How to send from my Z88 to my PC

I've got a Cambridge Z88 that I want to get working with my PC. Around 6 years ago - in 2004 - I made heavy use of my Z88 to do a whole bunch of writing on the train while commuting to and from work. ...
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8051 MCU debug board function

In school I have written many programs for an 8051 compatible CPU. But I never actually knew how our "debug" sets worked. I mean, we test our programs in special sets, which actually allow you to very ...
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How do I know which /dev/ttyS* is my serial port?

I have a laptop which has only one serial port. I went into: /dev directory, and I found: ttyS0 ttyS1 ttyS2 ttyS3 How do I know which of those "ttyS" refers to my serial port?
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Connecting to a switch?

I have a managed switch that I liberated from our school's surplus goods store for $10 that has a serial based console. I have a serial cable and a computer with a serial port, but I have no idea what ...
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How can I pipe the output of the serial port to a file in Windows?

How can I pipe the output of the serial port to a file in Windows? In Linux the command would be: cat /dev/ttyS0 > /opt/logs/Serial.log
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What would multiple serial ports be used for?

I saw someone was using something like the card in the link below on there system for some networking gear on their pc. I am very curious what a person would need 8 serial ports for. What kind of ...
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How can I setup a pair of virtual serial ports in windows XP?

I would like to create a pair of virtual serial ports that have a virtual null modem cable between them.
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How can I login to Ubuntu using a USB serial port?

How can enable remote terminal login into Ubuntu 9.10 using a USB serial port? I created device /dev/ttyUSB0 and i want to allow logins using Hyper-Terminal. I found some resources but they are ...
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Serial port game controller (racing pedals)

I have an old madCatz racing wheel for the playstation 2. The gas and brake pedals are connected to the wheel by a serial port. I just bought a usb racing wheel for the PC but it lacks pedals so I ...
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Determining Serial Driver Supported Baud Rates

How can I determine the baud rates supported by my serial driver? My driver details (from the Device Manager) follow, but they do not seem very helpful. I am writing an application that is crashing ...
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Is it possible to reset FTDI virtual com ports enumeration, we easily get hundreds of COM ports in production environment

I have also asked this on serverfault but perhaps it is better suited to be asked here? I hope I'm not breaking any etiquette. When producing devices that use a FTDI USB to serial chip to ...
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Serial Over IP, windows-linux [closed]

I need to have a serial port "shared" over the Internet (may or may not be using a VPN). At one end is a Windows box, and at the other is a Linux box, which has the serial port The Linux box has no ...
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Add serial port to VirtualBox VM?

I am using Fedora 12 and VirtualBox 3.1.2. My guest OS is Windows XP. How to add a serial port which will be 'physically' connected to /dev/ttyUSB0?
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Valid 16550 UART settings

Is it valid by the protocol of a FFUART 16550 to configure one side (Machine A) to 155200 baud rate and the other side (Machine B) to 1200? Should I expect the connection to work flawlessly in the ...
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RS232 Packet Sniffer

I'm working on a software development project that requires me to send signals to a device via RS232 port. Sadly the included utilities for transferring to and from the device would not work for mass ...
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Why do I lose data from serial port when I reboot my computer?

I have an application that is monitoring a serial port. Data is sent from the other side only when the port is opened but I found out that I lose some data when I reboot my computer. Why is that? The ...
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Windows with putty via USB serial cable to Linux serial port - output ok, input isn't

I am trying to get two way serial communications going between a Windows XP system and a Linux system (RHEL 5). I have /sbin/agetty -L 9600 ttyS0 in /etc/inittab. I am using a generic USB to ...
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Laptop with internal serial port in 2009 (and 2010) [closed]

Are there any computer vendors (like Dell, Lenovo, or..) that still sell laptops with an internal serial port? We are using several modem and other kind of box at work that have to be used (and/or ...
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Serial connection between 2 computers

I recently purchased a USB to serial cable to connect to other desktop computers (reason is for headless servers), and I don't know if it is working right or I am just doing something wrong. The USB ...
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Serial ports COM3-COM49 used, but not listed in device manager

Some piece of software or some driver appears to be using the serial ports COM3-COM49. New COM ports for Bluetooth et al get assigned ridiculous numbers over 50. When I try to change the number, ...
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15 Pin Serial Cable?

Stumbled across what appears to be a 15pin serial cable when cleaning out the equipment room today. I'm familiar with 25 pin and Any idea what these are commonly used for?
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How do I get Snow Leopard to recognize an old RS-232 UPS?

Instead of blowing $100+ on a brand new UPS, I decided to try to resuscitate the ancient CPS350SL that got me through college and grad school. One $7 sealed lead-acid battery later and it's back in ...
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Any free application to redirect serial communication to TCP/IP?

Please can anyone suggest a free application which creates virtual serial ports and any traffic on that port is redirected to given TCP/IP address?
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USB TO DB9 Adapter

I have a USB-to-DB9 adapter, no FCC serial visible anywhere, that I need drivers for. I can't seem to get any relevant info searching on Google. Does anyone have any good ideas where I might be able ...
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RS232 to USB conversion

I want to connect some old device (with a RS232 port) to my laptop which doesn't have serial ports. I bought an adapter which is made in China and comes with no drivers CD. After searching I ...
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Internet Connection Sharing via SLIP

I'm trying to get my Amiga 2000 online with a serial cable connected to a PC running Windows XP. I'm following these instructions, which glance over how exactly to configure Internet Connection ...
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an x86 computer platform with MANY RS232 COM ports?

I'm looking to buy a system that can run windows XP, has decent horsepower, and also has 12+ comm ports, i'm not looking to slap cards into my system either, any ideas?
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Cleaning up Windows XP serial ports

I have been using USB-to-serial port converters and have not been careful to plug them into -exactly- the same USB port every time. What is the best (and safest) method to clean up the giant mess of ...
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Virtualbox and Serial Port permissions

I have a Windows XP Pro SP3 host machine running a Windows XP Pro SP3 guest machine. The host machine has one serial port, COM1, that I need to use in the guest machine. When I add the serial port to ...
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WiFi adapter over serial port?

I just recently came into possession of a old AST Premium Exec notebook computer. The only ports it has are a serial port and a parallel port and it runs DOS. I thought that with the serial port I ...
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How can I add a DB9 serial port to a laptop?

I have a device I need a 9 pin serial port to configure. How can I add this capability to my laptop?
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What (traditional) modems work with Windows Vista 64-bit or Windows 7 64-bit?

I have a US Robotics v.Everything modem that I occasionally used for fax and Internet dial-in backup access. However, that modem connected to my previous PC using a plain RS-232 9-pin serial port. ...