Many different approaches are used to reduce power consumption at the circuit level design. Some of the main techniques are Transistor Sizing, Voltage Scaling, Voltage Islands, Multiple Threshold Voltages and Power Gating. There is a negative effect with each power optimisation technique used at the expense of performance or area. Rabaey (1996) states that Transistor Sizing (TS) technique is used to adjust the size of each transistor (smallest element in the digital system) or gate (group of transistors) for minimum power at the expense of the performance of the gate. Rabaey also states that transistor size is changed only if its place is not critical and it will not affect the whole circuit performance. Another Technique proposed by Pillai, Shin, & Arbor (2001) for power optimisation is Real-time Dynamic Voltage Scaling (RT-DVS) which it is dedicated for embedded computing systems. RT-DVS technique is exploiting the hardware characteristics of processors to reduce energy dissipation by lowering the supply voltage and operating frequency. Pillai, Shin, & Arbor also show that this RT-DVS algorithm closely approach the theoretical lower bound on energy consumption, and can easily reduce energy consumption 20% to 40% in an embedded real-time system. On the other hand the later will be affected by lowering speed of the overall system when using voltage scaling technique (Tawfik & Kursun 2009). Another technique called Voltage Island comes to solve the problem of the RT-DVS technique which different blocks can be run at different voltages for saving power in a non-critical island/block (Puri et al. 2005). Puri et al. also show that Voltage Island may require the use of level-shifters (to change the voltage supply level) when two block...
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Puri, R., Kung, D., & Stok, L. (2005, May). Minimizing power with flexible voltage islands. In Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on (pp. 21-24). IEEE.
Tawfik, S. A., & Kursun, V. (2009). Low power and high speed multi threshold voltage interface circuits. Very Large Scale Integration (VLSI) Systems, IEEE Transactions on, 17(5), 638-645.
Won, H. S., Kim, K. S., Jeong, K. O., Park, K. T., Choi, K. M., & Kong, J. T. (2003, August). An MTCMOS design methodology and its application to mobile computing. In Low Power Electronics and Design, 2003. ISLPED'03. Proceedings of the 2003 International Symposium on (pp. 110-115). IEEE.
Weng, S. H., Kuo, Y. M., & Chang, S. C. (2012). Timing Optimization in Sequential Circuit by Exploiting Clock-Gating Logic. ACM Transactions on Design Automation of Electronic Systems (TODAES), 17(2), 16.
Lab 4: Energy Conservation: Hot Stuff!! The purpose of this experiment is to try to find the original temperature of the hot water in the heater using the 60 degrees C thermometer. Use your 60°C thermometer, and any materials available in your laboratory, to determine the temperature of the water in the coffee pot. During this experiment we calculated the original temperature of a heater after it had been cooled down, and we did this by measuring hot, cold, and warm water, with a thermometer that had tape covering 60 degrees and up.
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...hborhood, additive CA are ideally suited for V LSI implementation. Different applications ranging from V LSI test domains to the design of a hardwired version of different CA based schemes have been proposed.
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Bolla, R., Bruschi, R., Davoli, F., Di Gregorio, L., Donadio, P., Fialho, L., & Szemethy, T. (2013). The green abstraction layer: A standard power-management interface for next-generation network devices. IEEE Internet Computing, 17(2), 82. doi: 10.1109/MIC.2013.39
“After the integrated circuits the only place to go was down—in size that it. Large scale integration (LS) could fit hundreds of components onto one chip. By the 1980’s, very large scale integration (VLSI) squeezed hundreds of thousands of components onto a chip. Ultra-Large scale integration (ULSI) increased that number into millions. The ability to fit so much onto an area about half the size of ...
Basic Mathematics for Electronics seventh edition: Nelson M. Cooke, Herbert F.R Adams, Peter B. Dell, T. Adair Moore; Copyright 1960
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