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Wireless sensor network is the network of tiny sensor nodes, which will sense the physical parameters like temperature, humidity and sends it wirelessly to the base station or to the neighbouring node. A typical sensor node has a sensor, a microcontroller and a RF transceiver. The size of the sensor nodes are shrinking because of the rapid growth in the Integrated Circuit Technology, which leads to an IC having processor and RF transceiver in it. Wireless sensor networks are used in environment monitoring, habitat monitoring, smart agriculture and in many fields. Wireless sensor networks is a interdisciplinary subject, which requires the knowledge of sensors, microprocessor based electronic hardware design, and Embedded communication software design.
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