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Edition Date:
September 1995
Part Number:
320289B-01
This manual describes the mechanical and electrical aspects of the PC-DIO-96 and contains
information concerning its operation and programming. The PC-DIO-96 is a 96-bit parallel
digital I/O interface designed around four OKI Semiconductor (OKI) 82C55A programmable
peripheral interface (PPI) chips. The PC-DIO-96 also includes an Advanced Micro Devices
(AMD) 8253 counter/timer which can be used to send periodic interrupts to the host system. The
PC-DIO-96 is a member of the National Instruments PC Series of PC I/O Channel expansion
boards for the PC computer family. These boards are designed for high-performance data
acquisition and control for applications in laboratory testing, production testing, and industrial
process monitoring and control.
This manual describes installation, theory of operation, and basic programming considerations
for the PC-DIO-96. The example programs included are written in C and assembly language.
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