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David Ashton
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re: Rebuilding America: Don’t teach to the test
David Ashton   2/22/2012 10:32:01 PM
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Whatever Bill did, he did a good job. The Falcons' project looked a bit crude at first glance, but given that these kids were only grades 5 & 6 they did an amazing job, they made full use of the LEDs and 7-seg displays, used both the PIC and a 555/4017 to drive them, and did all this on rotating platform. If Bill and the teachers can can get this kind of work out of such young kids, they'll go far.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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