Figure 4.4 An n-bit twos-complement adder-subtracter
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Author: Phyu Thwe

Project access type: Public

Description:

§Applying control variable s to the carry input line of the adder.

§When s = 0, the control line s selects the addition operation Y + X.

§When s = 1, subtraction operation Y – X = Y +  X ̅

§Using n two-input EXCLUSIVE-OR gates to the adder’s inputs.

Created: May 03, 2020

Updated: Jun 30, 2023


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