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Hewlett-Packard Co. said on Tuesday that its researchers have proven that a
technology they invented could eventually replace the transistor, a fundamental
building block of computers. In a paper published in Tuesday's Journal of
Applied Physics, HP said three members of its Quantum Science Research group
propose and demonstrate a "crossbar latch," which provides the signal
restoration and inversion required for general computing without the need for
transistors. HP said in a statement that the technology could result in
computers that are thousands of times more powerful than those that exist
today. "We are reinventing the computer at the molecular scale," said Stan
Williams, one of the authors of the paper, in a statement. "The crossbar latch
provides a key element needed for building a computer using nanometer-sized
devices that are relatively inexpensive and easy to build." Phil Kuekes,
another one of the paper's authors, said in a statement that transistors would
continue to be used for years to come with conventional silicon circuits. But,
he added: "This could someday replace transistors in computers, just as
transistors replaced vacuum tubes and vacuum tubes replaced electromagnetic
relays before them."