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Moore’s Law No Moore? Presented by: Cutting Edge Homework Development Goordon H. Moore • Co-founder of Intel • Observed the number of transistors in chips would double every 18-24 months • So far, Moore’s Law has fairly accurately predicted the growth of transistor counts. Today’s Chips • Manufacturers try to make transistors as close together as possible to make a chip smaller and faster. • Create so much heat only part of the chip can be used at a time • Chips are using wires that are as thin as 90 nanometers The theory • Wires can only get so thin. Before the distances between conductors is not sufficient to differentiate between 0 and 1 (off or on) and current is prone to leak to the insulating material, causing unintended shorts • The thinnest a wire can get is estimated at 100 nanometers Intel’s Solution • Use more cores in processors • Replace SiO2 with a new dielectric (a nonconductor of direct electric current) known as “high-K”. However it is not compatible with their current gate electrode. Alternatives: Spintronics • Spintronics is an emergent technology which exploits the quantum propensity of electrons to spin as well as making use of their charge state. The spin itself is manifested as a detectable weak magnetic energy state characterised as "spin up" and "spin down" Alternatives: Nanotubes • Nanotubes are a one atom thick layer of graphite that has been rolled into a cylinder. Nanotube based transistors can be made to operate at room temperature and unlike silicon, they don't leak. Alternatives: Crossbar Latches • This technology is being created by Hewlett-Packard, and allows much the same functionality of transistors, except on a molecular scale. They consist of a signal line crossed by two control lines. Depending on the voltages sent down the various lines, it can simulate the action of the three major logic gates: And, Or, and Not.