Here we have developed two input

logic gates with its inversion also being available for evaluating more combinational functions.

Quantum

logic gates are the most obvious application of this advance," said Steinberg.

Although still a long way off, the team suggest that these biological

logic gates could one day form the building blocks in microscopic biological computers.

Computer-chip components called

logic gates output a 1 or 0 depending on the configuration of a gate's inputs.

Using this design strategy, the researchers can create all two-input

logic gates and implement sequential logic systems.

FPGAs contain

logic gates that can be connected and disconnected by programmable switches.

Between 1998 and 2001, Weiss took some of the first steps toward building cellular

logic gates when he modeled and built a cellular inverter, an AND gate, and two other gates.

Nanosys Incorporated announced today the publication of pioneering research by Harvard Professor and Nanosys founder Charles Lieber that demonstrates the ability to reproducibly construct nanoscale

logic gates and carry out basic computations using assembled nanoscale building blocks.

Putting switches together lets you make

logic gates, and assembling

logic gates allows you to do computation," Piccione said.

These

logic gates have the potential to work on a much smaller scale than conventional transistors because they do not rely on a flow of electrons

For example, they devised a

logic gate from a nine-by-nine grid with two places that vehicles can enter and one exit.

The system will be used for the development of a variety of advanced dielectric-constant (high-K) structures in

logic gate stack applications.