Thanks for the reply sir and I am using windows OS and DOS compiler
Thanks for the reply sir but I am not allowed to use tool kits and I have to implement from the scratch.
Thank you so much sir and yes OS is windows and I read on user manuals that as DOS is older, it can access only 4 COM port addresses.
I have a problem in developing an application. I want to develop an application such that it takes commands through gui and communicate with external devices through...