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digital electronics digital arithmetic operations and circuits
1. The carry propagation delay in 4-bit full-adder circuits:
(A): decreases in direct ratio to the total number of full-adder stages
(B): increases in direct ratio to the total number of full-adder stages, but is not a factor in limiting the speed of arithmetic operations
(C): is cumulative for each stage and limits the speed at which arithmetic operations are performed
(D): is normally not a consideration because the delays are usually in the nanosecond range
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