c8051f020键盘和显示器源码，用hd7129来驱动

我写的四字点阵，1664的。用字库显示。有1302的时间显示。C语言，有proteus的仿真-I wrote the word dot-matrix, in 1664. With font display. 1302 shows that there is time. C language, proteus simulation

DDS 单片机控制AD7008 产生正弦波-AD7008 single-chip control of DDS generated sine wave

用单片机实现波形发生器，含电路图，原理图，源码-generate wave

另外一个RC531非接触式读卡器的全部源代码，实现全部功能-another RC531 non-contact reader the full source code, to achieve full functionality

单斜率模拟数字（ A / D转换）演示代码-Single-Slope Analog-to-Digital (A/D) Conversion

The 8051 programming in C.

用于步进电机的驱动.可以通过输出信号来控制步进电机的转速和角度控制.-For stepper motor driver. Can output signals to control the stepper motor speed and angle control.

ARM的计数器中断实验。是基于Keil For Arm的。-ARM interrupt counter experiments. Is based on the Keil For Arm.

1线通讯协议的c51例子程序-a line of communication protocol decoder examples procedures

随着经济的发展和人民生活水平的提高，自动门的应用也越来越广泛，它已经成为宾馆、超市等现代建筑所必备的，是建筑智能化水平的重要指标。自动门控制系统作为自动门系统的控制核心，决定了自动门系统的性能。国外生产的自动门控制系统性能比较优良，但是价格偏高；国内的同类产品虽然价格便宜，但是性能较差，故障率较高。本文研究一种基于AT89C51的自动门控制系统，功能强大，运行可靠，用户操作方便，而且成本适中，在市场上有较强的竞争力-With the economic development and improve the living standards of the people, automatic door applications more and more widely, it has become a hotel, supermarket, etc. necessary for a modern building, is building an important indicator of the level of intelligence. Automatic door automatic door control system as the core control system, determines the performance of automatic door systems. Foreign production of automatic door control system for excellent performance, but the high price While the domestic price of similar products, but poor performance, a higher failure rate. In this paper, AT89C51-based automatic door control system, powerful, reliable operation and user convenience, and the cost of modest, there is strong in the market on the competitiveness of