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. . Scaling and high speed electronics. Fast electronics: 10, 40,160 (?) Gb/s fiber optics Gigabit radio on 60 GHz band 180 GHz amplifiers, sensitive 2.5 THz diode mixers cheap 2 GHz phones, cheap 1 GHz PCs, cheap 20 GHz TV electronics gets ~10:1 faster each decadeAre we reaching the limit
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