We strive to deliver the best value to our customers and ensure complete satisfaction for all our textbook rentals.
You can return your online books for any reason within our refund period – no questions asked.
Every order is available for express shipping, and return shipping is always free.
You'll be happy with the quality of your books (or we'll ship you another one on our dime).
You can extend your rental at any time – at the same cheap daily rental rate.
If you decide to keep the book it will never cost more than the purchase price.
As always, you have access to over 5 million titles. Plus, you can choose from 5 rental periods, so you only pay for what you’ll use. And if you ever run into trouble, our top-notch U.S. based Customer Service team is ready to help by email, chat or phone.
Supplemental materials are not guaranteed for used textbooks or rentals (access codes, DVDs, workbooks).
Ultra-Low Power Processor Design Using Subthreshold Design Techniques: The Solution to Battery Life with Voltage Scaling
by:Bo Zhai, David Blaauw, Dennis Sylvester
Power consumption is becoming worse with every technology generation. While there has been much research in recent years proposing design methods addressing this issue, one of the most efficient approaches is to reduce supply voltage. In our research, we found the optimal voltage (Vmin) for energy efficiency in CMOS technology. We analyzed the different ...
Power consumption is becoming worse with every technology generation. While there has been much research in recent years proposing design methods addressing this issue, one of the most efficient approaches is to reduce supply voltage. In our research, we found the optimal voltage (Vmin) for energy efficiency in CMOS technology. We analyzed the different factors affecting Vmin and find that Vmin usually lies in subthreshold voltage regime. To verify the high energy efficiency of subthreshold operation, we designed and fabricated two subthreshold processors in 0.13um technology, specifically, the Subliminal 1 and Subliminal 2 processors. Measurements confirm 2.60pJ per instruction efficiency for the Subliminal 1. Also, we designed and fabricated the first sub-200mV compact 6-T SRAM in a commercial 0.13um CMOS technology. Silicon measurements show that all 24 dies measured were fully functional and a typical die operates from 1.2V to 193mV. Then to address the lost performance from voltage scaling, we proposed a novel micro-architecture and found that having multiple cores sharing one faster local L1 provides the best energy efficiency.
Since launching the first textbook rental site in 2006, BookRenter has never wavered from our mission to make education more affordable for all students. Every day, we focus on delivering students the best prices, the most flexible options, and the best service on earth. On March 13, 2012 BookRenter.com, Inc. formally changed its name to Rafter, Inc. We are still the same company and the same people, only our corporate name has changed.