EMERGING TRENDS IN SOFTWARE ENGINEERING
INTERNET OF THINGS IOT AND SOFTWARE ENGINEERING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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USB connection
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Internal battery
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Charger
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Adapter
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Detailed explanation-1: -4. How power supply is done to RPi? Explanation: The unit uses a Micro USB connection to power itself (only the power pins are connected so it will not transfer data over the connection). A standard modern phone charger with a micro USB connector will do, but needs at least 700 mA at 5 volts.
Detailed explanation-2: -Mains will usually be AC, but most electronic gadgets (Pi included) will be DC. This is normally handled by the plug in adaptor which will reduce the voltage AND rectify it into a DC supply. Usually this is done via a switching PSU these days as they’re lighter, more efficient and just as cheap.
Detailed explanation-3: -The Pi is engineered to work at 5 volts, plus or minus 5% (4.75-5.25 volts). If you supply less voltage than required, the Pi won’t power on. Which is why you shouldn’t attempt to power your Pi by plugging into a laptop or desktop computer.