1. Classical and Modern Features for Interpretation of ECG signal 2. ECG signal acquisition systems 3. Techniques for noise suppression for ECG signal processing 4. The issue of QRS detection 5. Delineation of QRS complex: challenges for the development of widely applicable algorithms 6. Mathematical modelling of T-wave and P-wave: a robust alternative for detecting and delineating those waveforms. 7. The issue of automatic classification of heartbeats