文件名称:51cuankoutongxin-fengmingqi
- 所属分类：
- 单片机(51,AVR,MSP430等)
- 资源属性：
- [Text]
- 上传时间：
- 2012-11-26
- 文件大小：
- 1kb
- 下载次数：
- 0次
- 提 供 者：
- 陈**
- 相关连接：
- 无
- 下载说明：
- 别用迅雷下载，失败请重下，重下不扣分！
介绍说明－－下载内容均来自于网络，请自行研究使用
由上位机发送1给单片机时，蜂鸣器以400ms频率发声，发2时以200ms频率发声，发3时以100ms频率发声，发4时关闲蜂鸣器。
-Sent by the host computer 1 to the microcontroller, the buzzer to 400ms frequency of sound, made 2 to 200ms frequency of sound, made 3 to 100ms frequency of sound, made 4 free off the buzzer.
-Sent by the host computer 1 to the microcontroller, the buzzer to 400ms frequency of sound, made 2 to 200ms frequency of sound, made 3 to 100ms frequency of sound, made 4 free off the buzzer.
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lesson7练习1.txt