PIC18F4550 SD卡，USB

视觉暂留，编程从一个I/O口输出一扫频信号，驱动一支LED灯闪动，频率范围为10HZ~99HZ，扫描时间为30秒，在LED闪动期间观察，一旦发现无法识别LED灯闪动时，按下按键K1，立即停止输出，并将此时的信号频率显示在数码管上，该信号的周期为测试者的视觉暂留时间。-Persistence of vision, programming from an I/O port outputs a sweep signal to drive an LED light flashing, the frequency range of 10HZ ~ 99HZ, scan time of 30 seconds, the LED flashing during the observation, once found it impossible to identify the LED lights flashing, press the key K1, immediate cessation of the output, and at this time the signal frequency displayed on the digital control on the test cycle of the signal" s persistence of vision time.

51系列单片机控制的微打驱动程序-51 series monolithic integrated circuit controls micro hits the driver

实时时钟芯片DS1302的C51程序列子-real-time clock chip DS1302 the C51 procedures Liezi

S3C2442的起动代码程序等。有较大的实用价值-S3C2442 starting code procedures. Have a greater practical value

初学单片机的一个实例运用，以at89c2051为例，用c语言编写的时钟程序。程序采用了两级中断，具有时钟及秒表功能。-beginners MCU use an example to at89c2051 example, the language used c clock procedures. Adoption of the two suspended, with the clock and stopwatch functions.

该程序是个蜂鸣器的调试程序，歌曲是兰花草-The program is a debug procedures buzzer, songs are兰花草

使用CYAN单片机的ECOG1开发板连接SIM300C的GSM模块开发的短信收发程序.供UART和AT指令编程者参考-using CYAN,sim300c, to send and receive SMS.

这是单片机中关于ADC0809的源程序，经测试过的，没有错误-This is a single-chip on the ADC0809 source, have been tested before, and no error

我参加湖北省电子设计大赛时候准备的一些资料-I have participated in electronic design contest in Hubei Province when some of the information ready

开发流程-Development process