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用51单片机写的抢答器，由于每个人的开发板不同，因此如果需要参考，请仔细研究IO口. PS:学校的破板子(51 microcontroller with written Responder, because each person s development board, so if you need a reference, please examine the IO port)

只能小车寻线与避障加寻光51单片机代码，就是全国电子设计竞赛1999年的E题啦。(Only the car line code 51 single-chip microcomputer and obstacle avoidance for light)

此例程学员更进一步地熟悉并掌握（存储芯片AT2402）的操作，有保存和读取操作 了解掌握I2C总线接口的工作原理及一般编程方法。(This routine trainees further familiar with and master the operation of the ( memory chip AT2402) , save and read operations Learn master I2C bus interface works and general programming methods . )

nrf905模块的无线通信例子，希望有用(Nrf905 module wireless communication example, hope useful)

说明：  针对MCS-51单片机的硬件结构和原理、指令系统、汇编、中断、定时器、并行扩展等进行了讲解。(The hardware structure and principle, instruction system, assembly, interrupt, timer and parallel expansion of MCS-51 single chip computer are explained.)

ad7812采集程序源码10位的，运用c语言言开发的，环境是KEIL 51。 可直接使用。 (The ad7812 acquisition program source 10, developed using c language words, the environment is the KEIL 51. Can be used directly.)

说明：  51单片机的数码管动态扫描源代码。包括Keil工程，Proteus仿真原理图。(51 single-chip digital control of dynamic scanning the source code. Including Keil works, Proteus simulation schematic.)

说明：  LWIP嵌入式协议栈详解，包含TCP/UDP/SLEVER模式，简介好用(LWIP Embedded protocol stack)

通过上翻键和下翻键来设置方波信号正负脉冲宽度，利用一排流水灯来显示按键的次数，通过观察流水灯亮的盏数确定占空比（按一次上翻键亮一盏灯，流水灯全亮时占空比调到了最高或者是最低状态，按一次下翻键灭一盏灯，流水灯全灭时占空比调到了最低或者是最高状态）。(Duty cycle of LED lights and adjustable oscilloscope display code)

fluent软件中关于模拟二维流化床的均匀流化作用的程序代码。(the fluent software simulation of two-dimensional fluidized bed uniform fluidization program code.)