A selection of Digital Input/Output PCI boards from Addi-Data. These PC boards are suitable for high speed data logging and integrated data acquisition of various digital signals with digital outputs for industrial control. These boards have been designed specifically for reliable use in harsh industrial environments and specific boards are available for digital signals from a NPN, PNP, relays, pulse counts or TTLs. The Addi-Data boards are equipped with many protective features, such as short-circuits and overvoltage protection, optical isolation, input and output filters, etc. Drivers, e.g. for Windows, Linux and for the most common programming languages like LabVIEW, Visual Basic, Delphi or C++ are supplied free of charge.