比较了Nrf产品和ZigBee芯片的优缺点，Nrf写的，偏向Nrf，仅做参考。-This paper has attempted to help draw the distinction between IEEE 802.15.4 functionality and the ZigBee TM protocol stack. This is highlighted by the fact that typically, IEEE 802.15.4 is implemented in hardware on a transceiver device, whereas ZigBee TM is implemented on a medium-scale microcontroller in addition to the aforementioned transceiver.