M. F. Lee, S. N. Mat Yusoff, K. H. Tan, and & J. S. C. Lim, “Needham Model Based Instructional Multimedia Material for Teaching Digital Logic Gates”, jtet, vol. 11, no. 1, Mar. 2019, Accessed: May 04, 2024. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/JTET/article/view/3063