An actor provides a stream of input to the system, and the handling of this input is to be described by use cases. The solution to this problem depends on whether the stream consists of discrete values or of continuous values.
Characteristics: Common in some domains. Advanced.
Keywords: Analog device, analog system, continuous system, discrete stream, input signal, input stream.
Stream Input: Discrete blueprint contains one actor producing an input stream of discrete values and one use case. The use case models the reception of a single value in the stream.