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

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

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Automation System
High-level languages:

require knowledge of the computer design
are very difficult to use
None of these
are "procedure-oriented"
cannot be used with automatic systems.

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Automation System
D/A (digital to analog) conversion:

must be fed through a filter to reproduce the original signal accurately
has to be sampled at 1/2 the highest input frequency
results in a binary code as the final output
None of these
both (b) and (c)

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