FERANI, Nia Annisa; SIMATUPANG, Sehat. RANCANG BANGUN INSTRUMENTASI PENGOLAHAN SINYALELEKTROKARDIOGRAFI (EKG) DENGAN ADDER AMPLIFIER BERBASIS PERSONAL COMPUTER (PC). EINSTEIN (e-Journal), [S. l.], v. 3, n. 1, 2015. DOI: 10.24114/einstein.v3i1.5447. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/einsten/article/view/5447. Acesso em: 12 oct. 2025.