Featured Articles

Apple announces its Apple Watch

Apple announces its Apple Watch

Apple has finally unveiled its eagerly awaited smartwatch and surprisingly it has dropped the "i" from the brand, calling it simply…

More...
Skylake 14nm announced

Skylake 14nm announced

Kirk B. Skaugen, Senior Vice President General Manager, PC Client Group has showcased Skylake, Intel’s second generation 14nm architecture.

More...
Apple officially announces 4.7-inch iPhone 6 and 5.5-inch iPhone 6 Plus

Apple officially announces 4.7-inch iPhone 6 and 5.5-inch iPhone 6 Plus

The day has finally come and it appears that most rumors were actually spot on as Apple has now officially unveiled…

More...
CEO: Intel on target for 40m tablets

CEO: Intel on target for 40m tablets

Intel CEO Brian Krzanich just kicked off the IDF 2014 keynote and it started with a phone avatar, some Katy Perry…

More...
Aerocool Dead Silence reviewed

Aerocool Dead Silence reviewed

Aerocool is well known for its gamer cases with aggressive styling. However, the Dead Silence chassis offers consumers a new choice,…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Thursday, 01 May 2008 07:45

New electric circuit type discovered

Written by David Stellmack

Image

HP Scientists want to develop it commercially


Scientists working at Hewlett-Packard have announced that they have discovered a fourth basic type of electrical circuit – one that might create a computer that "remembers" where it was and doesn’t need to boot up. 

Electronics theory recognizes three fundamental elements of a passive circuit: resistors, capacitors and inductors. Leon Chua, a scientist at U.C. Berkeley in the 1970s, posed that there should also be a fourth fundamental element known as a memory resistor, or memristor, and he proved the mathematical equations for it. A team of scientists at HP has now proven the existence of “memristance.”  The team, led by Stanley Williams, claims that memristance properties are very different from any other electrical device.  Williams and his team have developed a mathematical model and a physical example of a memristor, which they describe in the journal, Nature.

Williams compared memristor properties to water flowing through a garden hose. In a regular circuit, water flows from more than one direction. But in a memory resistor, the hose “remembers” which direction the water/current is flowing from, and it expands in that direction to improve the flow. Likewise, if water or current flows from the other direction, the hose/current shrinks from that direction.  According to Williams, "It remembers both the direction and the amount of charge that flows through it. ...That is the memory.”

It's very different from any other electrical device," Williams said of his memristor. "No combination of resistor, capacitor or inductor will give you that property." Williams and the HP team indicated that the memristor finding could lead to development of a new kind of computer memory that would not need to boot up. DRAM that is used on conventional computers is lost when power to a computer is turned off, and when the computer is turned back on it must be accessed from the hard drive.  But with the use of the memristor in a memory circuit the computer would not lose its place, even after the power was off and then turned back on.

According to Williams, "It's essential that people understand this to be able to go further into the world of nanoelectronics. It turns out that memristance, this property, gets more important as the device gets smaller. That is another major reason it took so long to find," Williams said.

Last modified on Thursday, 01 May 2008 18:14

David Stellmack

E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments