Automation System
The main function(s) of computer in CAD is/are

To serve as an extension to the memory of the designer
All of these
To enhance the analytical and logical power of the designer
None of these
To relieve the designer from routine repetitious tasks.

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Automation System
Direct Numerical Control means:

eliminating computers from the manufacturing process
using one computer to control several machines
complete elimination of a need for a human operator.
using several computers to control one large machine
None of these

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