Abstract: Due to elevating problems of global warming, reduction of energy dissipation becomes increasingly important. According to SMART 2020 report, the number of PCs globally is expected to increase from 592Million in 2002 to 2 Billion in 2014 and 4 Billion in 2020. Each of these machines consumes energy at every stage of life-cycle: manufacturing, usage and end-of-life. While electrical energy, taken from the wall during the computer usage has been in focus of the design community for over a decade, manufacturing and end-of-life stages have not been considered. A decade ago, PC manufacturing was by 3 times more energy consuming than three year-long PC usage. Since that there have been significant advances in fabrication technology, computer architecture, design, etc. Have these changes affected energy figures? What are the trends? Is manufacturing energy still the main source of energy consumption? Has the usage energy increased? What can be done to reduce total computer energy more efficiently? In this lecture we will try to answer these questions. The goal of this talk is twofold. The first one is to examine trends in energy associated with a typical computer in perspective to advances in technology and computer architecture made over the last decade. The second is to present an approach capable of amortizing the energy increase. We urge to explore energy reduction alternatives beyond the computer usage and advocate computer reuse as a possible approach to save energy.

Brief Biography of the Speaker:
Vasily Moshnyaga received the Computer Engineering Degree with Honors from Technical State University, Sevastopol, USSR in 1980 and Ph.D. in computer engineering from Moscow Aviation Institute in 1986. From 1986 to 1992 he was a Senior Lecturer and Associate Professor of Technical University of Moldova, Chisinau, Moldova. From 1991 to 1992 he was a Visiting Scholar at the Department of Electronics and Communication, Kyoto University, Japan. From 1992 to 1998 he was a Lecturer at the Department of Electronics and Communication, Kyoto University, Japan. Since 1998 he has been with the Department of Electronics Engineering and Computer Science, Fukuoka University, Japan, where he is currently a Professor. In 2005-2006 he was a Visiting Professor with the Computer Science Department, UCLA. His current research interests are in the areas of computer architecture, embedded systems, application-specific processors, video processing, VLSI design and design methodologies with a particular emphasis on energy-efficient design techniques. He has authored or co-authored over 170 referred journal and conference publications and holds five patents. Prof. Moshnyaga served as Vice-Chairman of the IEEE CAS Society, Fukuoka Chapter from 2008 to 2010, and an Associate Editor of the IEICE Transactions on Fundamentals of Electronics, Communication and Computer Sciences from 2005 to 2008. He is now a member of IEEE CAS Technical Committee on VLSI and a member of Technical Program Committees of several conferences and symposia including IEEE International Symposium on Circuits and Systems, ACM/IEE International Symposium on Low-Power Electronics and Design, IEEE International Conference on Systems, Man, and Cybernetics, etc. He received the Nikkei LSI IP Design Award in 2001 and Best Paper Award from SCI'2000/ISAS’2000 in 2000 and Research Encouragement Award from the Embedded Systems Symposium in 2011. He is a member of the Institute of Electronics, Information, and Communication Engineers of Japan and a senior member of IEEE.