An electrical or electronic device's input (s) provide the necessary connectivity and allows for the adjustment of the signals. Connection
The connection can be a fixed connection or through plugs and plugs. Usually they are determined by standards. The nature and quality of the connection depend on the input signal and the development of the technology. Adaptation
The signals to be processed will usually be converted and resized to size, impedance, frequency or analog / digital (AD or DA). An input can also provide security for the device. It can even be a virtual security like when connected to the Internet. Inputs can also be connected to a digital data bus (example: the IC bus)
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