Question: A control feature in an electronic data processing system requires the central processing unit (CPU) to send signals to the printer to activate the print

A control feature in an electronic data processing system requires the central processing unit (CPU) to send signals to the printer to activate the print mechanism for each character. The print mechanism, just prior to printing, sends a signal back to the CPU verifying that the proper print position has been activated. This type of hardware control is referred to as

a. Echo control.

b. Validity control.

c. Signal control.

d. Check digit control.

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