System-defined description of the functional structure of devices based on a level model of signal passage is proposed. We consider that such principles can be applied for the discipline "Theoretical instrument making" basics formation.
V. G. Zhytaryuk, V. G. Zhytaryuk,
"Functional structure of devices and apparatus", Proc. SPIE 10612, Thirteenth International Conference on Correlation Optics, 106120G (18 January 2018); doi: 10.1117/12.2305356; https://doi.org/10.1117/12.2305356