It is a basic introductory course in methods of Physics & Engineering such as applications of electrical circuits in biosensors and digital image processing. Sudents who will complete the course will be able to perceive basic electrical symbols and signals used in electrical circuit analysis, to understand ideal electrical circuit elements, gain knowledge of basic analysis methods in order to be able to analyze and synthesize electrical circuits, including applications of amplifiers in general and operational amplifiers in particular. Also, students will become familiar with basic methods and mathematical tools related to image processing-analysis of digital images, will be informed about the different application fields, such as biomedical imaging, and will be able to apply techniques of digital image analysis-processing in an educational laboratory as well as in a research environment.