IC卡购电软件实现，可以参考代码的源程序

1） 以单片机为核心部件组成一个音乐播放器。 2） 利用单片机的定时器产生乐谱的各种频率方波，信号经过放大后由喇叭发出声音。 3） 自行定义按键盘，每按一键，可选择一首歌曲进行演奏，某段音乐令单片机连续播放，演奏可通过按键来中断。 4） 在LCD上显示演奏歌曲的名称。 -1) the composition of the core components of SCM as a music player. 2) the use of MCU timer generated scores of the various frequency square wave signal through the amplified sound from the speakers. 3) self-defined keyboard, every click of a button, select a song to play, a certain period of continuous playback of music in SCM, playing by pressing a button to interrupt. 4) In the LCD displays the name of the song playing.

时钟芯片DS1302的使用,用LED显示的，具有键盘调节功能,在Keil下测试通过-The use of clock chip DS1302 with LED display with a regulatory function of the keyboard, under the test adopted in Keil

Device pins that are not connected to a specific peripheral function are controlled by the GPIO registers. Pins may be dynamically configured as inputs or outputs. Separate registers allow setting or clearing any number of outputs simu 中文-Device pins that are not connected to a specific peripheral function are controlled by theGPIO registers. Pins may be dynamically configured as inputs or outputs. Separateregisters allow setting or clearing any number of outputs simu Chinese

单片机C源程序souce，内有单片机C语言很多源程序，-souce

飞思卡尔单片机的EEPROM 的PE编程，许多初学者都不能很快进行EEPROM编程，而使用PE却可以使编程简化。-Freescale MCU EEPROM of the PE program, and many beginners can not be very soon EEPROM programming, the use of PE is able to make to simplify programming.

这个程序是用TI的单片机MSP430实现的PWM波形的输出。-This procedure is the realization of TI s MSP430 microcontroller PWM output waveform.

华为的印刷电路板（PCB）设计规范，程序编写规范等-Huawei’s printed circuit board (PCB) design specifications, programming specifications, etc.

ID卡读写 （51的汇编程序）-ID Card Reader (51 compilation procedure)

MAX1247子程序,实现12位高精度串行AD转换-MAX1247 subroutine, 12 realize high-precision serial AD converter

这是本人在网络上收集的GPRS开发资料，希望对那位朋友有用。-This is my collection of GPRS on the network development of the information to friends who want to be useful.