| 主权项 |
1. A device comprising a microprocessor and a thermometer wherein:
(a) the microprocessor sets an initial value, wherein the initial value is a maximum value; (b) the thermometer measures a temperature; (c) the microprocessor reads the measured temperature from the thermometer; (d) the microprocessor looks up a time interval corresponding to the measured temperature; (e) the microprocessor calculates a resulting value by subtracting the time interval from the initial value wherein
(I) if the resulting value matches a useful life value, then the microprocessor triggers a first indicator; or(II) if the resulting value does not match the useful life value, then the microprocessor triggers a second indicator and repeats (b), (c), (d), and (e). |
