STC89C51是高成本

我的HBS通讯程序范例，使用无极性通讯，压缩文件内有详细的说明。-my HBS communication procedures example, the use of limitless sexual communication, compressed paper a detailed explanation.

C8051F020对74LS595的控制-C8051F020 control of the 74LS595

医疗设备开发原代码5 医疗设备开发原代码5-Medical equipment, the development of the original code 5, the original code to develop medical equipment 5

使用PIC芯片控制U2270读取125KHz ID卡卡号，因为所使用的PIC资源很少，此程序极为精简，包含中断曼切斯特解码和校验全过程，非常实用。-The use of PIC chip control U2270 Read 125KHz ID card number, because the use of PIC scarce resources, this program is extremely streamlined, with interruption of Manchester decoding and checking the whole process is very useful.

此程序为键盘接口芯片程序，适合与avr单片机上，已经修改调试过-procedure for the keyboard interface chip procedures, and appropriate avr microcontroller, has been amended over Debugging

外部计数+显示程序 功能： 单片机外部输入脉冲信号，定时器参与计数 计数值由数码管显示出来。-External count+ display program features: MCU external input pulse signal, the timer counts involved in counting by the digital tube display.

读表法显示正弦波，附图。但只能输出定频，需要经过改动才能输出可调的 -Reading table shows sine wave, the attached map. But only the output frequency, changes need to go through in order to output adjustable

这篇程序是我一个同学编的,并且已经应用到了二相步进电机(四线步进电机)上了.但是我认为此程序需要改进的地方有很多. -This procedure is a fellow student, I made and have been applied to a two-phase stepper motor (four-wire stepper motor) on. But I think this process needs to be improved where there are many.

内容： 1、试验目的：了解按键的扫描原理 2、实现现象：同时按键抢答，先按的键有效，其他按键锁死 复位后重新开始抢答 3、硬件要求：按键 LED灯 原理：最先按下按键者有效，其他均无效-Contents: 1, test Objective: To understand the key principles of scanning two to achieve phenomenon: the key to answer in the same time, press the key and effective, other key-lock reset and re-start to answer in 3, the hardware requirements: button LED lights principle: first press the keys are valid, others are null and void

c8051f020 的扩展8255驱动数码管显示 同样是keilc啊-C8051F020-driven expansion of 8255 is a digital tube display the same keilc ah