本文件是用51单片机设计电子琴的资料文件，且带有原理图

简易信号发生器+Protues仿真,函数波形发生器产生波形表，通过DA转换产生正弦波。-Simple Signal Generator+ Protues simulation, waveform function generator waveform table, have a sine wave through the DA converter.

基于凌阳SPCE061，具有语音功能的波形发生器-Based on Sunplus SPCE061, voice-enabled waveform generator

lcd驱程,快来下啊-LCD drive way, to come under ah

主要考虑处理速度、功耗、程序存储器和数据存储器的容量、片内的资源，如定时器的数量-Main considerations deal with speed, power, program memory and data memory capacity, on-chip resources, such as the number of timer

此程序是针对MSP430F147型单片机的一个经典程序，特别适合初学者来学习AD相关寄存器的设置-This procedure is a single-chip MSP430F147-based classical procedures, particularly suitable for beginners to learn the AD-related register settings

数字钟是一种用数字电路技术实现时、分、秒计时的装置，与机械式时钟相比具有更高的准确性和直观性，且无机械装置，具有更更长的使用寿命，因此得到了广泛的使用。数字钟从原理上讲是一种典型的数字电路，其中包括了组合逻辑电路和时序电路。目前，数字钟的功能越来越强，并且有多种专门的大规模集成电路可供选择-Digital Clock is a digital circuit technology with the hours, minutes, seconds, timing devices, as compared with the mechanical clock has a higher accuracy and intuitive, and no mechanical devices, with more longer life, so be a wide range of use. Digital clock from the principle of speaking, is a typical digital circuits, including combinational logic circuits and sequential circuits. At present, the digital clock and more powerful, and there are a variety of specialized large scale integrated circuits to choose from

STC89C52脉宽调制

atmel官方的at91sam7x256芯片在iar编译环境下的全部演示代码，以工程方式提供。-official at91sam7x256 atmel chip iar build environment in the whole of the demonstration code to the project provided.

硬盘、u盘、mmc、cd-rom mp3播放器源码-Hard drive, u disk, mmc, cd-rom mp3 player source code

点阵式打印机驱动程序,CPU:89C51RD2,含3562个汉字,可打印图形,有1024字节缓冲区-Dot-matrix printer driver, CPU: 89C51RD2, including 3562 Chinese characters can print graphics, has 1024-byte buffer