This Basic Module 5 Digital Techniques, Electronic Instrument Systems training course is tailored for applicants seeking an EASA Part 66 Cat. B1 or B2 License. Upon successful completion of the course, participants will possess a comprehensive understanding of digital techniques and electronic instrument systems crucial in aircraft maintenance. Students will be proficient in explaining the construction of electronic instrument systems and performing conversions and calculations with decimal, binary, octal, and hexadecimal numbers. Additionally, participants will gain insight into the basic functioning of computers and understand the ARINC 429 digital Information Transfer system. The course will cover the basic functions of microprocessors, principles of fiber optic data transmission, and the operation of logic gates. Moreover, students will learn to handle electrical components while considering the destructive effects of static electricity (ESD) and the negative impacts of electromagnetic radiation. Lastly, participants will grasp the concept of built-in test equipment. Through practical exercises and theoretical learning, students will develop the skills necessary to effectively maintain and troubleshoot electronic systems in aircraft, enhancing their readiness for licensure and professional practice in the aviation industry.