51单片机对 siemens4442卡的底层驱动程序 把.rar改成.C即可

本例采用89C52, 晶振为11.0592MHZ，关于如何编制音乐代码, 其实十分简单,各位可以看以下代码.频率常数即音乐术语中的音调,而节拍常数即音乐术语中的多少拍 所以拿出谱子, 试探编吧!-Example use of the 89C52, crystal for 11.0592MHZ, on how to prepare music code, is actually very simple, you can see the following code. Frequency that is constant in terms of tonal music, and the constant beat of music terminology that is how much of the shoot so come up with music score , test made it!

数码管的显示子程序，对于用PROTEUS来仿真的同志，可以尝试的玩一下-Digital tube display subroutine for simulation using PROTEUS to comrades, you can try to play like

NXP的mifare ultralight　数据手册, 英文版本,完成对电子标签的操作.-NXP" s data mifare ultralight manual, English version, the completion of the operation of electronic tags.

这是一个数码管的程序，运行于iar的环境下，适用于msp430的单片机-This is a digital control procedures, running on iar circumstances, apply to MSP430 microcontroller

x5045的应用程序，多初学的朋友很有帮助！-X5045 applications, and more helpful beginner

这是改写的网友 embuffalo、独步上载在www.21ic.com自由发布区的由张凯原作的51上的拼音输入法程序。-This is the website embuffalo rewritten, the only available on the free www.21ic.com issued by the 51 original Zhang on the Pinyin input method procedures.

ht9200B C51编程子程序和HT9200A和资料-ht9200B C51 programming routines and information and HT9200A

[推荐]彭光红先生的《小容量单片机系统的C语言程序结构》Point RTOS monolithic integrated circuit real-time operating system -[Recommended] Mr. Peng Guanghong

RS422 RS485技术标准-RS422 RS485 technical standards

・单片机系统中的汉字显.. ・c51的usb的通信.. ・ADC0809做的数.. ・基于avr单片机系统.. ・单片机usb2.0 ・单片机系统中的汉字显.. ・c51的usb的通信.. ・ADC0809做的数.. ・基于avr单片机系统.. ・单片机usb2.0 -SCM system of Chinese characters .. c51 marked the usb communications .. ADC0809 so few .. avr microcontroller-based system .. USB 2.0 SCM SCM system of Chinese characters .. c51 marked the usb communications .. ADC0809 so few .. avr microcontroller-based system .. USB 2.0 Microcontroller