以比较匹配A达到时交替输出高低电平及写入其维持 时间常数之方法实现脉宽调制输出...

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基于51单片机的公交车报站系统程序 基于51单片机的公交车报站系统程序-Based on 51 MCU bus stop announcement system program

介绍单片机c51三则实用源代码，有详细的文字说明-introduced three practical source code, a detailed textual description

DDS数字信号发生器,采用AD9835DDS 专用芯片 输出范围1K--10MHZ 采用X25045作看门狗及数据存储器，用于设置各项参数的存储 内含电路图， 源程序 及一些相关资料-DDS digital signal generator, using AD9835DDS ASIC output range 1K-- Knoxville watchdog for the use of X25045 and data memory, used to set various parameters of storage containing circuit, the source and related information

在外部环境中检测亮度，温湿度，其中带232及485控制-Detected in the external environment brightness, temperature and humidity, which with 232 and 485 control

多路视频转一路输出源程序,以实现低成本多路视频服务器功能-multiple video source to output way, in order to achieve low-cost multi-channel video server

这是本关于学习KEIL软件使用方法的书，是PDF格式，请确认你安装了该软件才可阅读-This is the KEIL on learning how to use software, is in PDF format, please make sure you install the software before reading

单片机读写AT24C01代码,可用于24系列的芯片-literacy AT24C01 microcontroller code can be used in a series of chips 24

22个51单片机的实例，全部带源码和Proteus仿真。-22 of 51 examples of single-chip, all with source and Proteus simulation.

7281读写程序//读出BC728X内部寄存器的值 调用参数为寄存器地址-7,281 literacy procedures// BC728X read out the value of the internal register call parameters register address