Electronic clock MCU, 80C51, LED display. . Microcontroller interrupt timing.

带有24C02的红外数据接收程序，24C02是用I2C写的，接收端口为P3-2-24C02 with the infrared data reception procedures, I2C 24C02 is written in the port to receive P3-2

插在usb上使用的声卡的原理图,器件少,简单实用

鼠标应用程序示范 MCU AT89S51 XAL 12MHz 本程序可以实现鼠标的功能,并将位置显示在LCD上-Mouse model application MCU AT89S51 XAL 12MHz mouse in this program can realize the function, and location displayed on the LCD on

本源程序使用C51控制的PLL(SANYO LC72131)收音,可以通过HT1621驱动LCD显示,有完整的按键控制程序模块,能通过KEY进行各种功能操作,整个程序采用模块化设计,移植方便,可以初学者参考使用.(之前的那个也是我上载的,怎么就没开通?)-C51 use the source control PLL (SANYO LC72131) radio, Driving through HT1621 LCD Display, a complete module button control procedures, KEY through various functional operation, the whole process has a modular design and facilitate transplantation, beginners can use and reference. (which is also before I posted, how never opened)

单片机用T1中断在IO口P1.0输出乐曲(在P1.0口与VCC间接一喇叭即可听到) 1.由于输出的是方波，比较难听:-)你也可以将波形细分用DA输出正弦波 2.由于T1频繁中断，任何其他中断发生都会是乐曲打顿，只适合试验 3.优化音符编码：一个字节中包含节拍、音符、升降调，可区分数据和命令 -Single-chip microcomputer used in the IO port T1 interrupt output music P1.0 (P1.0 port with VCC in the indirect one can hear the speaker) 1. As the output is a square wave, more bluntly :-) You can also fine-waveform DA output sine wave with sub-2. Due to the frequent interruption of T1, any other interruption occurs Dayton will be playing music, is only suitable for test 3. optimized coding notes: A byte contains rhythms, notes, take-off and landing tune can distinguish between data and command

这里是51单片机的一些子程序，包括12864LCD的显示，ds18b20的显示，zlg7290的控制。-Here are some of the subroutines 51 MCU, including the 12864LCD display, ds18b20 display, zlg7290 control.

磁传感器信号，adc,状态机算法，无线传输，用于检测车辆通过数-Magnetic sensor signal, adc, state machine algorithm, wireless transmission, for detecting the number of vehicles

51驱动RA8835/SED1335的320*240的液晶驱动程序-use 51 to driver LCD display in scale 320*240 with RA8835/SED1335

大厦LED流水显示的程序，刚刚编完，可通过修改循环的次数和数据表来构成不同的显示效果-LED shows the procedure, the newly produced, cycle through changes in the number and composition of data tables show different results

C51 LCD of meniumItC51 LCD of meniumIt