I had one of those medical events this summer that netted a panicked wife, a fun ambulance ride, and ultimately a completely benign diagnosis. But for a couple of weeks, they had me monitoring blood glucose levels using a $10 monitor and a $150 supply of test strips.
Afterwards, of course, I disassembled the monitor and found it runs on a pair of coin cells. An MSP430 16-bit MCU controls everything, including an LCD display that shows quite a bit of information.
Remember the old days of a simple seven-segment display? We'd torture them into displaying some alphabetic characters and hope users could distinguish a B from an eight based on context. Now it seems that fancy screens are everywhere.
Without stirring from my chair, I can see the following screens:
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