Lee MF, Mat Yusoff SN, Tan KH, Lim & JSC. Needham Model Based Instructional Multimedia Material for Teaching Digital Logic Gates. jtet [Internet]. 2019 Mar. 17 [cited 2024 Jul. 3];11(1). Available from: https://publisher.uthm.edu.my/ojs/index.php/JTET/article/view/3063