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. (2021). JITACS: Journal of Information Technology and Computer Science, 1(1), 20-29. https://doi.org/10.31849/jitacs.v1i1.6419