Learn in the textbookIoT Networks
DefinitionBLE (Bluetooth Low Energy) is a low-power, short-range wireless specification added to Bluetooth.
ExplanationIt arrived with Bluetooth 4.0 and draws so little power that an ordinary coin cell keeps it going for a long time. It suits sensors and wearables that send small amounts of data now and then.
AnalogyRather than talking loudly all the time, it is like murmuring a quick word to the person beside you only when there is something to say.
Memory hookLE stands for Low Energy, so the name reads as "the energy-saving Bluetooth".