Answer:
Hardware layer
Explanation:
The hardware layer's job is to maintain and put to action central processor units and memory. Hardware layer first check the availability of the for mentioned duo and then decides the need to put one or another into action. Physical and data link layers act the same in the hardware layer. They bot are waiting to be called in action
Answer:
Sensing elements.
Explanation:
Sensing elements are the device which connect channels feedback and return it to the control system input. There are many sensors used for feedback control such as Tachometer, Encoders, Accelerometers and rate gyroscopes.
QR codes make up the basic structure of a relational database with columns containing field data and rows containing record information.
Answer:
Anything that doesn't have to do with food (including water), shelter, or clothing.
For Example: Going to the pool is not a need, going on vacation is not a need etc. etc.
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Explanation:
