Better to use one port on | Electronics › Electronics › by enter the password and rotate the motor if password is correct › Better to use one port on April 30, 2014 at 10:03 am #11656 himanshu guptaParticipant Better to use one port on microcontroller for unlocking the code so that noone can unlock it easily. if you use one port you will have 28 means 256 unlocking key to unlock the gate and it will help to provide better security.
