Albaba, M., Al-Abdo, A. and Khadra, Y. (2019) “Calculation the precision of the conversion of bio-signals (heart sounds) in analog to digital and digital to analog conversion processes in ATmega 8 microcontroller processors using computer simulation”, Association of Arab Universities Journal of Engineering Sciences, 26(4), pp. 105-112. doi: 10.33261/jaaru.2019.26.4.013.