Automation System
An encoder:

is used to send telegraph signals
converts a binary number to a decimal number.
converts an input to a binary number
None of these
can have only four keys

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Automation System
An operating system:

is useless in most control applications
provides ability for other programmers to understand the software structure
All of these
None of these
can help reduce software development time

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Automation System
Resolution in a CRT refers to:

the number of pixels in each square centimeter
the number of phosphor dots that react when hit by the electron beam
the number of addressable elements on the tube
None of these
the speed at which the monitor can accept data from the computer

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