why does my computer need a battery
In your computer the battery powers a chip called the Real time clock chip the RTC is essentially a quartz watch that runs all the time whether or not the computer has power the battery powers this clock when the computer boots up part of the process is to query the RTC to get the correct time and date a little quart clock like this might run five to seven years off a small battery then it is time to replace the battery
when should the new battery be replaced
what does gadget line 8 mean
what does query line 14 mean
what does this line 18 refer to