精确到秒，上电后开始走表，按键K2选择调整位，闪烁后按键K1加，按键K2第四次回到现实状态...

单片机C51语言的Mini X 嵌入式操作系统-C51 microcontroller Mini embedded OS X

16*2液晶显示驱动程序，包含字符输出和字符串输出函数，可直接使用-16* 2 LCD driver output and the string contains the character output function can be used directly

RS485通信程序，采用ModBus协议，注解详细，学习ModBus的好文档-RS485 communication program using ModBus protocol, detailed notes, good documentation of the study ModBus

关于sdc/mmc的详细用法,日本网站下载-On sdc/mmc detailed usage, Japan website

基于51系列单片机实现8字数码管对时钟秒表的显示-MCU eight characters of the digital clock shows the stopwatch

ARM I2C 通讯软件(中断方式）,通过此程序，可以方便的完成CPU 和其他芯片之间的I2C通讯。-I2C communication with ARM (INT mode)，by it, could do communication between CPU and other chip.

全面介绍了高质量PCB设计技巧，共为8章。-A comprehensive introduction to high-quality PCB design techniques, a total of 8 chapters.

用单片机汇编语言写的使用的子程序 包扩浮点书的加减还有 模糊算法-SCM assembly language used to write the use of the subroutine package expanding the floating-point addition and subtraction algorithm still fuzzy

本单片机开发例程含有电路图及C语言，有一定的参考价值-Containing the single-chip circuitry to develop routines and C language, the value of some reference

STC89C58RD+系列软件实现多串口-STC89C58RD+ Series software multi-serial