A small keyboard program, there are nine buttons, through the 422 control other...

51控制STA013实现MP3音频解码，实现了STA013的初始化、音量调节、静音、音质设置、声道控制。同时包含通过RS232串口控制LCD实现同步显示。代码经过调试，运行通过。

用C来实现实时时钟。对比与上个汇编语言。-Using C to achieve real-time clock.

MSP430与GPRS短消息收发例程，短消息服务中心号码。-MSP430 SMS and GPRS transceiver routines, short message service center number.

ST7920驱动128*64液晶串并口程序 可下载直接使用 另有相关资料解释-ST7920 driver 128* 64 LCD serial and parallel program can be downloaded directly related to the use of additional data interpretation

DAC7611，12位串口DA驱动程序，只需将代码中的四个端口按自己的电路修改就可以使用。-DAC7611, 12 bit serial DA driver, just the code of the four ports in accordance with their own modifications on the circuit can be used.

zlg7290加液晶显示，本次拓展了20个按键，每按一键会在液晶上显示不同的数值。已通过硬件实现。-zlg7290 plus LCD display, this extends the 20 keys, each press a button in the LCD display different values. Has passed the hardware implementation.

初始化键盘的源码，转自网友，给初学者参考-The source code to initialize the keyboard, carried Netizen, a reference to the beginner

RS422 RS485技术标准-RS422 RS485 technical standards

基于ATMEGA128控制的DS18B20的温度显示，采用LED显示。-ATMEGA128-based control DS18B20 the temperature display, LED display.

利用C8051F020为控制单元，在74LS165与74LS595之间数据通信-C8051F020 control unit for use in the 74LS165 and the 74LS595 data communication between