Read 51 keys, and return the computer serial port debugging assistant

HD7279的程序，从51上移植到avr上面的程序，传上来提供大家参考-HD7279 procedures, from 51 on avr transplanted to the above procedures, Chuan-up to provide U.S. reference

在单片机向实际系统发出控制信号时,需用数模转换芯片将数字信号转成模拟信号.这个程序和原理图详细说明了DA转换器的应用和开发.-In SCM systems to the actual control signal, the required digital-to-analog converter chip digital signal into analog signal. This procedure and schematic diagram detailing the application of DA converters and development.

at89s51，超级牛的教程，可以配合proteus仿真实验，-at89s51, super tutorial cattle will be in line with Proteus simulation experiment,

W78e58读写iButton的源程序，应用于电子门锁的完整程序-W78e58 iButton read and write the source code used in electronic locks integrity procedures

矩阵键盘键值显示和液晶程序-LCD．汇编-Matrix liquid crystal display and a keyboard key process-LCD. Compilation

4*4扫描键盘,通过键值通过4个数码管显示出来.-4* 4 Scanning keyboard, through key through four digital tube display.

SST39VF080 FLASH的单片机驱动源代码，可直接复制到uVision中验证，开发的单片机芯片为80C51-SST39VF080 FLASH microcontroller-driven source code, can be directly copied to verify uVision to develop chips for the 80C51 microcontroller

8051单片机仿真软件，可以查看内外RAM仿真数据和寄存器数据，并在windows平台下设置断点进行实现

开发环境：IAR Embedded Workbench Version: 3.21A 功能 使用msp430的定时器A产生信号控制led闪烁 做适当改进可用于其他-Development environment: IAR Embedded Workbench Version: 3.21A function using MSP430 timer A control signal led flashes can be used to make appropriate improvements in other