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Why Do Desktop Computers Have Batteries ?
Most people will be surprised to know that even their desktop computers have batteries. The battery is required for powering up a chip called Real Time Clock. Battery does not power the computer itself, but it keeps the computer clock ticking. This real time clock is nothing but a regular quartz watch that keeps running inside the computer even when it is switched off. This is why the desktop computer or even the laptop ends up showing accurate time when you switch on the computer. When the computer boots, it is an essential thing for the clock to show the right time and the date. More...
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Replacing Smoke Alarm Batteries
Smoke detectors are likely to stop at any time simply because they run on batteries and the batteries may stop working. A rule with smoke alarms is to change the batteries twice every year. Experts believe that it is best when you do it during the daylight savings hour. Also, smoke detectors start going off or beeping on and off when it is time to change the batteries. It is pretty easy to change the batteries in the smoke alarm. More...
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