Nanoelectronic Device Applications Handbook

6	Low-Power Reliable Nano Adders Azam Beg, Mawahib Hussein Sulieman, Valeriu Beiu and Walid Ibrahim

CONTENTS

6.1    Introduction

6.2    Low-Power Full Adders

6.3    Effects of Threshold Voltage Variations

6.4    Classical, Reverse, and Optimal Transistor Sizing

6.5    Results and Analyses

6.6    Conclusions

References

6.1    INTRODUCTION

Addition is a common arithmetic operation in a wide variety of digital applications. Full adder (FA) cells are used in many arithmetic operations and are crucial in both central and floating-point units. They are also used extensively for cache as well as for memory address calculations. The soaring demand for mobile electronic devices such as portable computers, smart phones, and tablets necessitates power-efficient ...