Received my new o2 "Essential Plan" text advising me it will replace my Tesco (o2) PAYG "LITE" plan.
o2 have, at last, sent my text kindly advising of a change in my Tesco 8p per minute 'Lite' tariff. They didn't actually say they're tripling the PAYG price to 25p but I'm sure that was just an ...
Abstract: This paper presents a low-power analog front-end (AFE) photoplethysmography (PPG) sensor fabricated in 0.35 μm CMOS process. The AFE amplifies the weak photocurrent from the photodiode (PD) ...
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