Activities Manual for Programmable Logic Controllers
Activities Manual for Programmable Logic Controllers
5th Edition
ISBN: 9781259679568
Author: Petruzella, Frank
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 10, Problem 15RQ

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Difference between multi-bit I/O interfaces and discrete type:

Multi-bit interfacesDiscrete I/O
With multi-bit interfaces, a group of bits can be used as a unit for either input or output.With discrete interfaces, only a single bit is used to read an input and control an output.
Multi-bit interfaces can be used for accommodating devices which need Binary Coded Decimal (BCD) inputs or outputs...

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