A simple microcontroller serial communication routines for those who need it for...

红外线遥控器按键检测程序. 通过检测两次下降沿之间的时间差判断接受到的数据位. 已经通过了测试,能够正确区分出32bit数据的遥控器按键键值. 具有数据重发功能,但是数据的重发有点频繁. 使用晶震频率为11.0592MHz,所有定时值都是基于这个频率计算. 占用很少量的CPU时间,使用了外部中断0接受数据,定时器0进行计数, 定时器1作为串口的波特率发生器(Band = 9600).-Infra-red remote control button detection program. By detecting falling edge twice to determine the time difference between the received data bit. Has passed the test, could correctly distinguish 32bit data button remote control key. With data re-issued, but data a bit of re-issued frequent. Zhenyuan frequency of use of crystal 11.0592MHz, all timing values are calculated based on this frequency. occupied by small quantities of CPU time, use the external interrupt 0 to accept data, timer 0 to count, timer 1 as a string port baud rate generator (Band = 9600).

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这是一个C51做的GPS终端 CPU：89S52 语言： Keil C51 主要是RS232通信-This a C51 done GPS terminal CPU : 89S52 Language : Keil C51 is RS232 communication

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由于该源程序并非为单片机而编写，因此资源占用率很大，要想在C51中使用，还必须对其进行改造-because the source is not prepared for a microcontroller, the occupancy rate has great resources, in order to use the C51, we must transform its

LCD的工作原理，包括LCD的液态晶体介绍，扫描技术，显示模块等等！-LCD working principle, including the LCD liquid crystal, the scanning technology, display modules and so on!

8019sch网络芯片 带PCB图 8019sch网络芯片 带PCB图-8019sch network chip with PCB Figure 8019sch network chip with PCB diagram

/* 程序详细功能介绍： *当按下按键P3.3 ，AT89S51单片机产生“叮咚”声从P3.2端口输出 *程序设计方法 * 1． 我们用单片机实定时/计数器T0来产生700HZ和500HZ的频率，根据定时/计数器T0，我们取定时250us， * 因此，700HZ的频率要经过3次250us的定时，而500HZ的频率要经过4次250us的定时。 * 2． 在设计过程，只有当按下SP1之后，才启动T0开始工作，当T0工作完毕，回到最初状态。 * 3． “叮”和“咚”声音各占用0.5秒，因此定时/计数器T0要完成0.5秒的定时，对于以250us为基准定时2000次才可以。 */-/* Procedure detailed functional Introduction:* When pressing the button P3.3, AT89S51 Singlechip a