you have to give key debounce | Microcontroller › 8051 › Serial communcation using 8051 › you have to give key debounce August 25, 2014 at 7:24 am #12072 Ashutosh BhattParticipant you have to give key debounce delay after key is pressed. then send A once and enter in continuous loop that will send B only once and do nothing till key is pressed again
