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Pascal is the another language that can program to connect controlling out of computer‘s port, such as Serial Port, RS-232, Parallel Port, Printer Port. Generally, many languages will have function for sending value and reading value from port.

Although, there is no language, it can be programmed to directly connect along port. So, you have to use the function from DLL file for sending the function that send and read value from port of Pascal like the following, Read the rest of this entry »

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As we know that VB can’t program to connect through Parallel Port directly. In the book, there will be explanation that we create DLL files that can write by using whatever language that has the function connecting to port. This website I have ever presented programming by C++, using Inp function for getting value along port and out is sending value out along port.

So now, we will introduce creating DLL file (Dynamic LInk LIbrary) by Borland Delphi, using Assembly programming to help for connecting through port by using the function of Assembly.

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