With 0.5 digital control, making a digital clock digital clock embedded C progra...

at2051中实现AD转换的源代码！也算是一个实例程序。-at2051 realizes the source code which AD transforms! Also is an example procedure.

AVR ATMEGA32可以同时四路PWM输出，同时四路频率可调，占空比可调-AVR ATMEGA32 four PWM output at the same time, while four-way adjustable frequency, adjustable duty cycle

模拟交通灯，并带有数字显示的程序。初始时全为红灯，显示“HELLO”字样。然后交通灯以“红绿、红黄、绿红、黄红”四种状态做循环，而且黄灯会闪烁，每种状态都带有到数记时。当按下P3_2时，变成“红红”状态，并显示“STOP”字样！ -simulated traffic lights and figures with the procedure. When all of the initial red, shows that the "hello" words. Then traffic lights to the "black, red and yellow, green, red, yellow red" state to do four cycle, but the yellow light flashes, each state will have a few to remember when. When pressed P3_2, into a "red" state, and shows that the "STOP" word!

按键扫描 51单片机加8279 8279通过74LS 138译码器扩展4×4键盘、6位显示器。 由3-8译码器对SL0～SL2译出键扫描线，由另一3-8译码器译出显示器的位扫描线，并采用了编码扫描方式。 为了防止出现重键现象，扫描输出线高位SL3不参加键扫描译码。CPU对8279的监视采用了查询方式，故8279的中断请求信号IRQ悬空未用。 -Scan button 82,798,279 plus 51 single-chip decoder 74LS 138 through the expansion of 4 × 4 keyboard, the display 6. From 3-8 decoder SL0 ~ SL2 translated to the key scanning line, by another 3-8 decoder translated display scan line, and uses code scanning. In order to prevent the emergence of the phenomenon of re-key, scan the output line does not take part in high level SL3 scan decoding keys. CPU on the 8279 surveillance using the query mode, the 8279 interrupt request signal IRQ left unused.

51单片机读写usb移动硬盘。提供全套资料，原理图，固件源代码。-usb mass storage module

keil编译,philip d12。-compiled with keil compiler,and using d12 of philip

通用的LCD显示的子程序,汇编语言的,还可以-General of the LCD display subroutine, the compilation of language, but also

键盘与显示 4*4键盘 8个数码管轮流扫描作动态显示 硬件电路需要74LS138 cd451 -Keyboard and display 4* 4 keyboard 8 digital tube rotation scanning circuit for dynamic display hardware need 74LS138 cd451

基于AT89S52的温度传感器18b20控制系统程序：温度检测，自动转换led显示；具有超限报警功能。-AT89S52-based control system for temperature sensor 18b20 process: temperature detection, automatic conversion led display have overrun alarm.

72段LCD驱动器SD0418的测试程序-72 LCD drive SD0418 test procedures