功能：一个真实的

读取RF射频卡源代码（C51）-RF card reader source code (C51)

sl811usb芯片与51的文件系统-a filesystem about USB chip sl811 and 51

我的89S52设计作品之一：基于89S52单片机的数值电压表：该电路采用MAX187高精度A/D转换器，采用串行输出，测量范围直流0-20伏，使用1602LCD液晶模块显示，使用了双积分电路的原理.-One of my design work 89S52: 89S52 microcontroller-based voltmeter values: the circuit with MAX187 high-precision A/D converter, serial output, measuring range 0-20 volts DC, using 1602LCD LCD module shown that the use the principle of double integral circuit.

具体的硬件结构,大家可以看 WS 系列产品的原理图 * 利用AT89S51单片机来制作一个手动计数器，在AT89S51单片机的P3.3管脚接一个轻触开关， * 作为手动计数的按钮. 数码管驱动采用动态扫描方式用单片机的P0.0－P0.7驱动数码管的段码， * P1.3 控制个位数码管的共阳极公共端，P1.2 控制十位数码管的共阳极公共端 * 通过按一下P3.3按键,数码管做 1 的累加, 实现00~99的计数功能,当计到99时又从00开始. * 大家可自行修改程序,扩展到0000~9999的计数范围-Specific hardware architecture, we can look WS schematic family of products using AT89S51* Single-chip to produce a manual counter, in the P3.3 pin MCU AT89S51 by one touch switch,* as a manual count of button. nixie tube driven by dynamic scanning with MCU P0.0-P0.7 driver code segment digital tube,* P1.3 control bit digital tube anode of a total public client, P1.2 control of 10 digital total anode tube through public client* P3.3 click buttons, a digital pipe to do one of the cumulative, realize 00 ~ 99 count function, when the total to 99 from 00 the beginning of time.* everyone can modify the program, extended to 0000 range of ~ 9999 count

这是一个用430写ＳＤ卡的原程序大家读读看，好东西哦！-This is an SD card with 430 write everyone read the original procedure, the good stuff Oh!

89c2051Control LED(RGB).

C51源程序，实现IAP功能，可实现嵌入式系统的自主学习功能

这是利用51单片机来实现对cd-rom的控制并实现类似于mp3的功能!-This is the use of 51 single-chip microcomputer to realize on the cd-rom control and realize the function is similar to mp3!

让单片机唱歌的程序-Let Singlechip singing procedures

本地机使用ATDT命令拨号,远程机设为自动响应方式,即可进入联机方式, 进行终 端通信.在联机方式下,按PageUp键上载文件,按PageDn键下载文件,Ctrl-O呼出主菜单, 退出联机方式使用Ctrl-D键.退出终端仿真器主程序使用TC编写.终端方式为VT100.-Local machine using the ATDT command dial, the remote machine is set to automatically respond to the way, you can enter the line for terminal communication. In-line mode, press PageUp key to upload files, download the file by PageDn keys, Ctrl-O exhaled main menu , quit-line use Ctrl-D keys. withdraw from the terminal emulator to use TC to prepare the main program. terminal for VT100.