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Special I/O Unit

Term : Special I/O Unit

What is 'Special I/O Unit'? What does 'Special I/O Unit' mean?

Definition

A Unit that is more intelligent than the Basic I/O Units, which have only contact inputs or contact outputs. Special I/O Units include Analog I/O Units and High-speed counter Unit. Special I/O Units differ from CPU Bus Units (such as Network Communications Units) in that they have a smaller area for exchanging data with the CPU Unit.

Programmable Controllers