Electrocardiography and Embedded Systems: An Engineering Approach to Cardiac Monitoring presents an innovative integration of biomedical signal acquisition, embedded processing, and real-time ECG monitoring. The book combines foundational knowledge of cardiac physiology with practical implementation using Arduino and ESP32 platforms. It covers electrode design, signal filtering, circuit construction, and microcontroller programming. Designed for biomedical engineers and Medical Instrumentation Techniques Engineering, students, and researchers, the book emphasizes low-cost, wearable ECG solutions with applications in telemedicine and education. Featuring comparative analysis with commercial systems and insights into future directions like machine learning and cloud-based monitoring, this resource bridges clinical relevance with hands-on engineering.