Samosir, B. (2022). Improving Student Learning Outcomes with the Application of Problem Based Learning Models in Microprocessor and Microcontroller Subjects at SMK Negeri 2 Pematangsiantar. International Journal of Multidisciplinary: Applied Business and Education Research, 3(7), 1284-1294. https://doi.org/10.11594/ijmaber.03.07.08