全国电子设计大赛2009个题目的意义和意义。

Freescale i.MX51 debug board - boot from USB-Freescale i.MX51 debug board- boot from USB

基于中断控制的声光报警器的设计.采用中断方式，设计一个声光报警器的硬件电路和控制程序。程序运行时，一旦8位开关信号量状态满足设定条件，就触发中断，使发光二级管按规律闪烁，同时扬声器播放一段音乐。 硬件设备包括一台微机、一个MFID微机实验箱、一块T型板，2输入四与门 74ls08、8位总线驱动器 74ls245、LM386A音频放大器、排阻、扬声器各一个，发光二极管8个，470uF电容2个、104电容4个，插线若干。 -Interrupt-based control of sound and light alarm design. Using interrupt mode, designing a sound and light alarm hardware circuits and control procedures. The program is running, once the 8-bit switch signal to set the amount of state to meet the conditions to trigger interrupts, so that light-emitting diode flashes according to the law, while speakers play a piece of music. Hardware includes a computer, a computer simulation, MFID box, a T plate, 2 input 4 and gate 74ls08, 8-bit bus driver 74ls245, LM386A audio amplifier, exclusion, speakers of a light-emitting diode 8, 470uF capacitor 2 a, 104 capacitors 4, plug-line number.

笔段式lcd显示子程序，c语言编写-T-piece lcd display

DS18B20 c51程序（EE21学习板演示程序） -DS18B20 c51 procedures (EE21 learning demo board)

一个4510的BIOS,已经测试通过了,在里面添加了基于USB的烧写方法-a BIOS 4510, has passed the test, they add a USB-based method of burning

IRQ4中断有三个中断源：1KHz、2Kz和4KHz,每一个中断分别控制与IOA0-IOA1,IOA2-IOA3和IOA4-IOA7相连的LED灯-IRQ4 interrupt has three interrupt sources: 1KHz, 2Kz and 4KHz, each interruption of the respective control and IOA0-IOA1, IOA2-IOA3 and IOA4-IOA7 connected LED lights

usr lpc2148 develop usb hid

atm89c52的12864编程显示， 在仿真中通过。-Programming atm89c52 of 12864 showed that the adoption of simulation.

文件系统的基本操作程序,与硬件无关,支持FAT12/FAT16/FAT32-File system

51单片机数码管和按键处理驱动程序。可作为学习51的朋友参考。-for study 51 references.