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Edition Date:
November 1996
Part Number:
320288B-01
This manual describes the mechanical and electrical aspects of the PC-DIO-24 and contains
information concerning its operation and programming. The PC-DIO-24 is a 24-bit parallel,
digital I/O interface designed around an 82C55A programmable peripheral interface (PPI). The
PC-DIO-24 is a member of the National Instruments PC Series of PC I/O Channel expansion
boards for the IBM PC computer family. These boards are designed for low-cost data acquisition
and control for applications in laboratory testing, production testing, and industrial process
monitoring and control.
This manual describes installation, basic programming considerations, and theory of operation
for the PC-DIO-24. The example programs included are written in C.
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