Serial Port Programming

Yes.

If there is data, it certainly can be sent to the serial port. The question is how to access the data on the web server. What are the origins of the data? Is it from external users posting, like this forum? Or is it data internally generated and posted on your website? You might want to look at this:

http://www.w3schools.com/website/web_spa_homepage.asp

As for working with serial ports, this is my favorite:

http://docklight.de

Good luck with your quest.

I want to communicate electronic device through the serial port communication with Web application. Suppose I have Web page there are two buttons one button will send '1' on serial port of computer. & another button will send '0' on the serial port. I don't understand how to send this binary digit to the serial port.

How to send data from Web page to the serial port. I saw some links I think I have to develop Windows program in Dot net that will send data from the Web page to the serial port of computer. I just want to confirm so please help me.

"Suppose I have Web page there are two buttons one button will send '1' on serial port of computer. & another button will send '0' on the serial port. I don't understand how to send this binary digit to the serial port."

Right there, you show a misunderstanding of serial ports.

You do not send a Binary Digit to a serial port, you send a Byte to the serial port.

You also need to have the serial port configured properly, based on the equipment you are sending the data to:

• Do you need to send 7-bit Bytes, or 8-bit Bytes?
• How many Start Bits do you need to send?
• How many Stop Bits do you need to send?
• What Parity do you need to use? Even, Odd, or No?
• What Baud Rate do you need to use?
• Do you send the data Big Endian or Little Endian?
• What sort of Handshaking do you need to set up?
• Will you be communicating in Simplex, Half Duplex, or Full Duplex?

Once you have the answers to those questions, I'll be able to assist you, until then, I doubt anything I could say would enlighten you.

i don't know but you're addressing a general misconcept that all things must be done from the same place

the web.page can store cookies or even write files or databases - the content in what can be used as what your Comm "driver" perhaps on a different device will address to a COM/USB/... port yet on another device

webpages on end user are slow - unless you run some active-x (just perhaps https://msdn.microsoft.com/en-us/library/aa259393(v=vs.60).aspx) or another dynamic executable there

No comparison.

Post '57 T Birds are lead sleds.

See here.

http://php.net/manual/en/function.fopen.php#20935

How to Read RS232 Serial Port in PHP like this QBasic Program

http://blog.950buy.com/article/php-use-rs232-serial-communication-to-send-file/

Serial comm with PHP on Windows

Do a little research.

Mr. Axelson left nothing out of his 400 page reference tome:

Image is older 2nd edition, I think a 4th or 5th is out now.

The older RS-232/485 serial port one is now a classic, found in used book stores (minus the floppy disk):

I did Google search & I found that The Web page can't send any information to the physical port on computer.

I need help to understand which process is use to send information from Web page to the physical port on computer

Do another Google search to understand the process.

Hire an IT person.

Go back to school.

Give up.