anirut chottanom. (2021) The development of classroom attendance system: Case study faculty of Informatics, Mahasarakhan university. <i>Journal of Applied Informatics and Technology</i>, <i>3</i>(1), 22-34.anirut chottanom. "The development of classroom attendance system: Case study faculty of Informatics, Mahasarakhan university". Journal of Applied Informatics and Technology 3 (2021):22-34.anirut chottanom. The development of classroom attendance system: Case study faculty of Informatics, Mahasarakhan university. Faculyt of Informatics, Mahasarakham University:ม.ป.ท. 2021.