Table 14 Total transistor counts of the proposed quaternary half adder.

From: Energy-efficient design of CNTFET-based quaternary arithmetic circuits

Devices

Number of devices

Transistor count

Subtotal of transistors

Voltage divider

1

3

3

Proposed SQNAND (2 inputs)

2

21

42

Proposed SQNAND (3 inputs)

1

27

27

Q2B decoder

2

16

32

Binary Inverter

1

2

2

Binary 2-NOR

1

4

4

Binary 2-NAND

18

4

72

Binary 3-NAND

2

6

12

Binary 4-NAND

3

8

24

Total

31

91

218