Electronica: Raspberry Pi gets another I/O board News & Analysis 11/16/2012 7 comments U.K. component distributor Premier Farnell has announced it has an exclusive deal with OpenLX SP Ltd. to distribute the PiFace Digital I/O board and will be able to supply both it and a 5-megapixel camera board in the first quarter of 2013. Both items are designed to complement the low-cost, credit-card sized Raspberry Pi computer.
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.
January 2016 Cartoon Caption ContestBob's punishment for missing his deadline was to be tied to his chair tantalizingly close to a disconnected cable, with one hand superglued to his desk and another to his chin, while the pages from his wall calendar were slowly torn away.122 comments