BLOCK DIAGRAM XOR

Figure 1. This diagram shows how the XOR function works. Exclusive OR (XOR) – A Fundamental Element of Reversible (i.e. Lossless) Encryption. Because of the properties of XOR, one of the inputs can be used as a key for data going into the other input.
How to design a four bit adder-subtractor circuit? - EE-Vibes
Oct 18, 2021block diagram of full adder. Half adder: A half adder is a type of combinational arithmetic circuitry that uses two numbers addition and outputs an S, sum bit, as well as a C, carry but. The S (sum bit) is the result of the XORing of A & B, and also the C (carry bit) is the ANDing of A & B, if A & B, seem to be input bits. half adder