The ACLS-DLL1 software is a standard Windows Driver/DLL for NuDAQ ISA-Based digital I/O cards ACL-7130, ACL-7120, ACL-7122, ACL-7124, ACL-7125, ACL-7225, and PET-48DIO. These driver APIs can be used with any Windows programming language that supports DLLs, including Microsoft Visual C/C++, Visual Basic, Borland C++, and Delphi etc. A complete set of sample programs for Microsoft Visual C/C++ and Visual Basic clarify the usage of each provided function. Also you are welcome to modify them to fit your requirements for saving your development effort and time.