calculated in the design, such as : cash registers, calculators often encountere...

采用东芝TDA7495/TDA7496芯片（已经形成产品）制作的高保真立体声音频放大器PCB裸板图-Toshiba chips used TDA7495/TDA7496 (has been formed products) produced by high-fidelity stereo audio amplifier PCB bare board diagram

定时器结合LED 7805开发板，适合初学者-Timer combination LED7805 development board, suitable for beginners

两颗51单片机通过串口通信的代码,独有的仲裁机制使得任一颗单片机都能成为主机.-2 51 Single-chip serial communication through the code, unique to the arbitration mechanism allows any host can become a single-chip microcomputer.

随便玩玩,想下个东西,可是不让我下，上传了就可以下了么?

基于51单片机的简易函数发生器的源代码，有需要的可以参考一下-A simple microcontroller based function generator 51, the source code

* 功能：运行RTC进行计时，将所时间值不断的通过串口向上位机发送，并把秒的值输出数码管D1 * 上显示。上位机运行EasyARM软件，在串口发送/接收窗口观察。 * 说明：* 通讯波特率115200，8位数据位，1位停止位，无奇偶校验。-* Function: RTC to run for a time, the time value will be constant upward through the serial-bit machine to send, and seconds values D1* output digital tube display. PC running EasyARM software serial port to send/receive window of observation.* Description:* 115200,8 bit baud rate of communication data bits, 1 stop bit, no parity.

红外线的解码驱动程序，用于单片机对遥控器等发出的红外线进行解码接收-Infrared decoder driver for single-chip, etc. on the remote control infrared receiver to decode

控制电机运动的G代码程序,如果对G代码不清楚,请先看懂G代码,然后再看本程序.-Control motor movement, G code program, if the G code is not clear, please understand G code, and then look at the procedures.

DES/3DES算法的C语言实现，我对代码进行优化。只需要几十个字节的内存就可以。很适合用于单片机等下位机使用。-DES/3DES algorithm in C language, I optimized code. Only need dozens of bytes of memory can be. SCM is very suitable for such use under the plan.

51单片机使用1602液晶显示和PS/2键盘的示例。其中包括C51源程序（C语言写的），生成的hex文件，keil中生成的各种文件。 其中每句源程序都有详细的注释，很适合初学者。-51 MCU using the 1602 LCD and PS/2 keyboard example. Including the C51 source code (C language to write), the generated hex file, keil generated documents. In which each sentence has a detailed source notes, very suitable for beginners.