SISTEM INFORMASI ABSENSI KARYAWAN MENGGUNAKAN QR CODE (QUICK RESPONSE) DI PT. REDES JAYA PERSADA: EMPLOYEE ATTENDANCE INFORMATION SYSTEM USING QR CODE (QUICK RESPONSE) AT PT. REDES JAYA PERSSADA. JITACS: Journal of Information Technology and Computer Science, [S. l.], v. 1, n. 1, p. 20–29, 2021. DOI: 10.31849/jitacs.v1i1.6419. Disponível em: https://journal.unilak.ac.id/index.php/JITACS/article/view/6419. Acesso em: 6 jul. 2026.