Automation System
In raster-scan colour monitors, colour can be intensified by:

having each electron gun controlled by a composite signal
using an in-line gun arrangement with a solid metal mesh
None of these
having each electron gun controlled by separate signal
grouping the phosphor dots in a circular pattern

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Automation System
Semiconductor devices:

None of these
have a very short infant mortality period
All of these
are less reliable than electro¬mechanical components
usually have a very short MTBF (mean time between failure)

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