Measurement Computing CIO-DIO96 - Manual (Page 7)

Chapter 1
Introducing the CIO-DIO96
Overview: CIO-DIO96 features
The CIO-DIO96 is a 96-bit digital I/O board with four 82C55 parallel-interface chips. The board provides the
96 bits in 24-bit groups based on the 82C55 specification.
Each 82C55 chip controls 24 CMOS/TTL-compatible digital I/O pins. Each 24-bit group is divided into three
eight-bit ports, or two 8-bit ports and two 4-bit ports. Each port is programmable for input or output.
All I/O bits are set to input mode (high impedance) on power up and reset. Locations are available for installing
pull-up or pull-down resistors.
All signals pass through a 50-pin connector.
Software features
For information on the features of InstaCal and the other software included with your CIO-DIO96, refer to the
Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf .
Check www.mccdaq.com/download.htm for the latest software version.
7