Bello, R.-W. “Simplified Traffic Lights Using 8051 Maxim DS89C4XX Embedded Controller (MDE): Simplified Traffic Lights Using 8051 Maxim DS89C4XX Embedded Controller (MDE)”. Asian Journal of Mathematical Sciences(AJMS), vol. 3, no. 3, Sept. 2019, https://ajms.in/index.php/ajms/article/view/216.