reading external data via com port or parallel port

Hi all....how can i read external data to matlab via serial port or parallel port? please help .

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/?term=tag%3A%22lpr%22

Somewhere in those postings you will find explanations from me about why using the parallel port is not a good idea, especially not for new projects.

Answer 1

[Friedrich]

Hi,

have you tried the serial command?

http://www.mathworks.com/help/releases/R2012a/techdoc/ref/serial.html

[Ahmed Tawfeeq]

I typed the the instruction s=serial(COM1);

in my desktop pc but matlab showed me an error message says '

undefined function or variable 'serial'for data type of 'char'

[Walter Roberson]

Which MATLAB release are you using?

[Ahmed Tawfeeq]

I am using 2011a

[Walter Roberson]

Hmmm. Please check

which -all serial

Do you possibly get an answer that says something about shadowing and about no license?