DESIGN OF TERNARY LOGIC ARITHMATIC CIRCUITS USING CARBON NANO-TUBE FIELD EFFECT TRANSITORS

Titiloye Stephen Oyediran&TitiloyeYetundeAdebimpe

Department of Electrical Engineering

 Federal Polytechnic, Bida

ABSTRACT

This paper presents a design of ternary arithmetic circuits including half-adder, full-adder and 1-bit comparator using Carbon Nano-Tube field effect transistors (CNTFET). The CNTFET has unique characteristics of behavior according to its arrangement of atoms. Threshold voltage of CNTFETs can vary by changing its diameter and also one intermediate state between two normal stable ON and OFF states introduced for multi-valued logic computation. Moreover ternary logic is a promising alternative to the conventional binary logic design technique, since it is possible to produce three states (TRUE, FALSE& UNKNOWN), and also reduces the number of interconnects and chip area and increases efficiency. Novel circuit design of half-adder and comparator based on ternary logic CNTFETs is proposed in this paper, where increased number of states in CNTFETs will eventually increase the number of bit handling capacity in the device.

Keywords:-Carbon Nano-Tube Field Effect Transistor (CNTFET), Multi Valued Logic (MVL), Half-Adder, Full-Adder,Comparator.

MODELS AND TREATMENTS OF ABNORMAL BEHAVIOUR: THE CHANGING CONCEPTIONS OF MENTAL DISODERS

¹Leonard C. Orji &² Mfon E. Ineme

^1&2Department of Psychology

Christopher University, Mowe, Ogun State

²University of Uyo, Uyo, Akwa Ibom State

Email: leo_orji@yahoo.com, mfonineme@yahoo.com

ABSTRACT

It is the objective of this paper to uncover to the reader the various conceptions of mental disorder/abnormal Behaviour across various ages of human existence including their conceived methods of ameliorations.Explanations from various literatures were presented from the Stone Age through the age of reason and enlightenment with adequate lessons on humanitarian approaches which propelled the establishment of mental hospitals in the 20th century and the resultant contemporary developments and milestones.

Keywords: Models. Treatment, Abnormal Behaviour, Mental Disorder, Conceptions