对数字语音系统的开发有帮助 包含常用资料，开发程序，及调试报告等...

基于51单片机实现UART通信 SPI通信 和IIC通信 -Based on 51 single-chip UART communication realize SPI and IIC communications communications

基于89S51单片机，实现正统，方波和三角波的输出-89S51-based single-chip, to achieve legitimacy, square and triangle wave output

usb 68013A芯片原理图和PCB图-usb 68013A chip and PCB schematic diagram

8051-adc0804

能实现多功能。既可做倒计时秒表,又可进行定时，还可以通过扩展完成其他功能，而且功能的相互转换也十分简单-To achieve multi-functional. Can do the countdown stopwatch, but also to timing, but also by extending the completion of other functions, and inter-conversion functions is also very simple and

vetess交换机管理软件，支持CLI管理，WEB管理，SNMP等各种常用管理功能-vetess switch management software, supports CLI management, Web management, SNMP management and other commonly used functions

这是VB编程RS232串口（COM口）控制的D/A(数模转换)转换板的上位机演示程序。通过电脑串口（或其他具有串口的单片机、PLC、DSP）发个简单的可视ASCII指令，便可以方便地控制8个数模转换通道输出设定的电压值。比如,电脑串口输出字符串"C2V2660"到本控制板,则控制板将控制2号通道输出2.66V电压；电脑串口输出字符串"C6V3060"到本控制板,则控制板将控制6号通道输出3.06V电压.指令非常简单，完全不需了解复杂的硬件及时序控制。-This is a VB programming RS232 serial port (COM port) control D/A (digital-analog conversion) conversion board host computer demonstration program. Via the computer serial port (or other serial port of the microcontroller, PLC, DSP) made a simple visual ASCII commands, they can easily control the number of eight-channel DAC output set voltage. For example, the computer serial output string " C2V2660" to this control panel, then the control board will control 2-channel output 2.66V voltage computer serial output string " C6V3060" to this control panel, then the control board will control the 6 channel output voltage is 3.06V. instruction is very simple, completely without understanding of complex hardware and timing control.

基于单片机的程序，利用18B20测温，并通过1602液晶显示，并有检测18B20是否正常工作的功能。-Based on SCM procedures, the use of 18B20 temperature, and liquid crystal display 1602, and 18B20 Detect Whether or not there is a normal job functions.

单片机控制火车车厢门上方的LED显示程序-Single-chip microcomputer to control the top of the train compartment door LED display program

PIC 单片机 电机的控制代码设计及参考电路原理图。C语言代码。-PIC Microcontroller motor control code and reference design circuit schematics. C language code.