查看会员资料
用 户 名：陈****
发送消息- Email：用户隐藏
- Icq/MSN：
- 电话号码：
- Homepage：
- 会员简介：
最新会员发布资源
51cuankoutongxin-fengmingqi
- 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 th