这是一个音乐播放程序，它可以驱动两首歌曲进行演唱

周立功单片机DP51+程序-weeks meritorious SCM DP51 procedures

93C46读写程序（EE21学习板演示程序） -93C46 literacy program (EE21 learning demo board)

太阳能热水器方案详情，包括标牌和登记册详情

DDS，FPGA产生，用verilog语言实现-DDS, FPGA generated using Verilog language

多功能按键电子时钟，由两个独立按键分别以单击，双击，长击，联击等功能控制，创意新颖。-Multi-function button electronic clock, respectively, by two separate buttons to click, double, long strike, strike and other functions associated control, creative novelty.

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.

基于单片机技术的声反馈抑制系统研究 学术论文-Single-chip technology based on acoustic feedback suppression system for academic papers

RS485的C51程序 中断 寄存器设置 接收和发送数据，希望对大家有用-RS485 interrupt register of the C51 program set to receive and send data, in the hope that useful

LCD字库生成 ；-LCD font generation

微型打印机的驱动程序，希望对朋友们有用。-This is a driver of micro printer.Hope it is helpful to friends.