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Paul Sakuma/Associated Press

Hewlett-Packard scientists reported Wednesday in the science journal Nature that they have designed a simple circuit element that they believe will make it possible to build tiny powerful computers that could imitate biological functions.

R. Stanley Williams, Hewlett-Packard’s director of the quantum science research group, and his team designed a circuit element that may make it possible to build tiny powerful computers.

The device, called a memristor, would be used to build extremely dense computer memory chips that use far less power than today’s DRAM memory chips. Manufacturers of today’s chips are rapidly reaching the limit on how much smaller chips can be.

The memristor, an electrical resistor with memory properties, may also make it possible to fashion advanced logic circuits, a class of reprogrammable chips known as field programmable gate arrays, that are widely used for rapid prototyping of new circuits and for custom-made chips that need to be manufactured quickly.

Potentially even more tantalizing is the ability of the memristors to store and retrieve a vast array of intermediate values, not just the binary 1s and 0s conventional chips use. This allows them to function like biological synapses and makes them ideal for many artificial intelligence applications ranging from machine vision to understanding speech.

Independent researchers said that it seemed likely that the memristor might relatively quickly be applied in computer memories, but that other applications could be more challenging. Typically, technology advances are not adopted unless they offer large advantages in cost or performance over the technologies they are replacing.

“Whether it will be useful for other large-scale applications is unclear at this point,” said Wolfgang Porod, director of the Center for Nano Science and Technology at the University of Notre Dame.

The technology should be fairly quickly commercialized, said R. Stanley Williams, director of the quantum science research group at Hewlett-Packard. “This is on a fast track.”

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