单片机原理及实验以及源程序
实验一 功能：使连接在 MCS-51 单片机 P1.0 引脚的 LED 闪烁。
实验二 设计并调试一个双字节无符号数乘法子程序
实验三：设计并调试一个将双字节无符号二进制数转换为压缩 BCD数的子程序。
实验四：利用外部中断输入引脚（中断方式）控制步进电机的转动。(The principle and experiment of single chip microcomputer and the source program
Experiment 1 function: make the LED flashing on the P1.0 pin of MCS-51 microcontroller flicker.
Experiment two design and debug a double byte unsigned multiplication subroutine.
Experiment three: design and debug a subroutine that converts the double byte unsigned binary number to the compressed BCD number.
Experiment four: use external interrupt input pin (interrupt mode) to control the rotation of stepper motor.)