电动读卡器IC卡SI4442读写模块源代码

232同485转换的pcb图，有需要的只要稍加修改一下就可以了-232 with 485 conversion pcb diagram, there is a need for as long as a little tinkering can be a

基于51单片机系统，利用AD转换芯片ADS7841，数码管驱动芯片CH452，以及CD74HC4051、CD74HC259、CD74HC154、74HC244等接口芯片实现二十路以上的电压监测、显示与通断控制。编程环境：keil-Based on 51 single-chip microcomputer system, using AD conversion chip ADS7841, digital tube driver chip CH452, and CD74HC4051, CD74HC259, CD74HC154, 74HC244 interface chip such as the way to achieve more than twenty-voltage monitoring, display and on-off control. Programming environment: keil

介绍了一种用单片机io口模拟实现串口功能的方法，并提供了简单的实现方法-introduced a microcontroller with io I Serial functional simulation methods, and to provide a simple method

使用51单片机和usb ch375芯片，完成与pc之间的通讯-The use of 51 single-chip computer and usb ch375 chips, complete with communications between pc

c51单片机与ＰＣ间的串口 通信驱动程序-C51 MCU and PC serial communication between the driver

C到ASM，ASM到C到Keil C

3208点陈式显示电子时钟，有兴趣的朋友可以DIY，同时也可以提供代码参考。-Chan 3208 point display electronic clock, interested friends can DIY, but also can provide reference code.

用C语言写的红外遥控解码程序，，，， 语法上没错，但解码完成后有错，，没个按键的都一样，，不知道什么问题，望指点，，EMAIL:wjsjdeng@sina.com.cn-C language to write the infrared remote control decoder,, the grammar is correct, but after the completion of decoding wrong, not a button are the same, and do not know what, look a spot, EMAIL : wjsjdeng@sina.com.cn

8051Fsoc系列单片机c8051f120代码使用片内的AD模块-8051Fsoc Series Singlechip c8051f120 code uses the AD-chip module

非接触式IC卡程序样例2-non-contact IC card Example 2