C51串口扩展5个源代码，可以弥补51单片机串口不足的缺点，

桦宣430研讨会资料盘里的430源码资料-Cheng Xuan seminar information set 430 in the 430-source information

单片机汇编语言编写的IC卡读写程序--IC card read/write program for SCM. It is written in assembly language.

单片机与PS2键盘相连的应用，可以分大小写输入，通过1602液晶将字符显示出来-SCM and PS2 keyboard connected applications, can be divided into upper and lower case input, through the 1602 LCD will be displayed characters

智能无线防盗报警器的设计,由AT89C51单片机控制电路、无线收发电路、DTMF（双音多频）电路、语音录放电路、电话接口电路等部分组成-Intelligent wireless burglar alarm design, by the AT89C51 single-chip control circuit, a wireless transceiver circuit, DTMF (Dual Tone Multi-Frequency) circuits, voice recording circuit, telephone interface circuit components, such as

通过单片机实现对AT93C66进行控制，最大可以存储4K的内容-AT93C66 single-chip microcomputer to realize through the control, the biggest can store the contents of 4K

MSP430单片机开发的相关测试程序，I/O口的测试-Single-chip MSP430 development-related test procedures, I/O port test

电子秒表的设计 1、用系统8253定时器提供的55ms定时单位，设计秒表定时程序。 2、有关系统定时方法： PC机系统中的8253定时器0工作于方式3，外部提供一个时钟作为CLK信号, 频率：f=1.1931816MHz。 定时器0输出方波的频率:fout=1.1931816/65536=18.2Hz。 输出方波的周期Tout=1/18.2=54.945ms。8253A每隔55ms引起一次中断-Electronic stopwatch design one, using the system timer 8253 provides 55ms timing units, design stopwatch timing procedures. 2, the system timing method: PC system timer 0 of 8253 working in the way of 3, to provide an external clock as the CLK signal, the frequency: f = 1.1931816MHz. Timer 0 output square wave frequency: fout = 1.1931816/65536 = 18.2Hz. Cycle square wave output Tout = 1/18.2 = 54.945ms. 8253A every 55ms caused a disruption

DESCRIPTION This function initializes the pointers in the _pid structure 　　to the process variable and the setpoint. *pv and *sp are 　　integer pointers.-DESCRIPTION This function initializes the pointers in the _pid structure to the process variable and the setpoint.* Pv and* sp are integer pointers.

东芝T6963控制芯片的240128点阵液晶屏驱动程序-Toshiba T6963 controller chip of the 240,128 dot-matrix LCD driver

pic单片机串口通信调试程序，单片机收到上位机命令后发送数据-Single-chip serial communication pic debugger, single-chip PC orders received after sending data