Automation System
An encoder:

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

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Automation System
Resolution in a CRT refers to:

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

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