Lee, Hyun-Chang, and Kyu-Tae Lee. “A Study on the Advanced Logic State Diagnosis of Logic Lab-Unit for Digital Education”. International Journal of Engineering & Technology 7, no. 3.24 (August 10, 2018): 339–343. Accessed May 3, 2024. https://sciencepubco.com/index.php/ijet/article/view/22681.