这次课程设计的内容是LED、步进电机和喇叭的控制，通过对步进电机的原理的掌握，学会步进电机与芯片的连接方法，以及如何控制脉冲输出，控制单片机的正转，反转，加速转和慢转等，了解步进电机速度的软件控制方法，此外要和蜂鸣器，数码管，LED结合起来，学会控制蜂鸣器的声音的长短，大小，频率，数码管的多数字稳定显示，通过软件定时实现数秒的结果，通过有规律的脉冲来控制LED灯泡循环显示。合理的选择芯片，以及芯片端口，方便程序的实现，通过程序在步进电机和它们之间切换使用，实现连续的功能状态。-The content that this course is designed is LED, walk into the control of electrical machinery and loudspeaker, through to walking into the grasp of the principle of the electrical machinery, learn to walk into the connection methods of electrical machinery and chip, exported and how to control the pulse, control the rotating of the one-chip computer, overturn, rotate with higher speed and rotate etc. slowly, understand, walk into electrical machinery software of pace control method, take and buzzer, the number is in charge of, LED combines together, learn to control the size of the sound of the buzzer, size, frequency, most word stability that the number is in charge of reveals, realize the results of several seconds regularly through the software, control LED bulb circulation to reveal by regular pulse. Reasonable choice chip, and chip port, realization to facilitate procedure, switch over and use through the procedure between walking into electrical machinery and they, realize the c