Design of Low Power and Efficient Carry Select Adder Using 3-T XOR Gate

Table 1

Truth table of 4-bit BEC.

3 : 0	3 : 0
0000	0001
0001	0010
0010	0011
0011	0100
0100	0101
0101	0110
0110	0111
0111	1000
1000	1001
1001	1010
1010	1011
1011	1100
1100	1101
1101	1110
1110	1111
1111	0000