Jose, Jiphil P., R. Deepika Sharma, A. Jeevitha, V. Pavithra, and P. Prathibha. 2021. “Design and Implementation of FPGA Based Vending Machine for Integrated Circuits (IC’s)”. International Journal of Research in Engineering, Science and Management 4 (7): 212-16. https://journal.ijresm.com/index.php/ijresm/article/view/1036.