this may help youhttp://www | Microcontroller › 8051 › 8:1 mux in 8051 alp and 8051C › this may help youhttp://www April 15, 2016 at 5:38 pm #13875 Ashutosh BhattParticipant this may help you http://www.engineersgarage.com/tutorials/keil-programs-8051?page=3