charging fitbit first time

Original article address: Success Jun 28,200 5 Abstract: The maxim real-time clock (RTC) series includes several devices with a streaming charger, which can charge the second backup battery or capacitor. The battery or capacitor is used to maintain clock operation when the VCC powers down. The energy stored in the capacitor needs to maintain the clock for a certain period of

A few days ago, the wireless mouse ran out of power, so I went to get a new battery and suddenly found that the home's No. 5 battery was all used up. I thought I had to buy it again, And suddenly remembered that there was a rechargeable battery at home, as a result, find out the gpchao charger that has not been used for a long time ...... You have not guessed it wrong. You have not used it for a long time.

The charge time calculation method of a simple RC Circuit. The time constant is Tao = RC. Generally, three Tao can be fully charged. V0 is the initial voltage value of the capacitor;V1 is the final charged or placed voltage value of the capacitor;VT is the voltage value of the capacitor at t time.Then,Vt = "V0" + (V1-V0) * [1-exp (-T/RC)]Or,T = rc * ln [(V1-V0)/(V1-Vt)] Calculate the

Charging Time-modulethe standard installation of Python consists of a set of modules, called Standard libraries .Module>>> Import Math>>> Math.sin (0)0.0Module is a programWhatever python program is capable of being imported as a module. $ cat hello.py#!/usr/bin/pythonPrint "hello,signjing!"$./hello.pyhello,signjing!If you save the Python program in the /home/ggz2/magiccube/mysh/pys folder, run the followin

', '/usr/lib64/python2.7/lib-old ', '/ Usr/lib64/python2.7/lib-dynload ', '/usr/lib64/python2.7/site-packages ', '/usr/lib64/python2.7/site-packages/ gtk-2.0 ', '/usr/lib/python2.7/site-packages ', '/root/python ']/usr/lib64/python2.7/site-packages is the best choice.2, tell the compiler where to findEdit Sys.pathExport pythonpath= "/library/python/2.7/site-packages:{$PYTHONPATH}"Path configuration file. pth file to implementPython in the process of traversing a known library file directory, if