Reading Correct Password and Interfacing with AT89S51/2 from the sentence "Masukkan password" with user password is password123, then enter the correct password with viewing LED, still need development but good try for making RS232 communication from

本程序是基于at89s51单片机软件产生PWM控制直流电机转速的程序，希望对大家有用。-This program is at89s51 microcontroller software program PWM control DC motor speed, the hope that useful.