自己在keil51中用C实现了一个电子钢琴展览项目，cpu用P89V51RD2，完全自己写的代码...

有关74hc080的一些相关资料，希望可以帮助大家，它多用于IC卡读取了！-74hc080 some of the relevant information, I hope can help everyone, it used the IC card reader!

EZ-USB 2100系列单片机原理、编程及应用.PDF 北航出版社 编著者:颜荣江 余志强 张进 阴大兴 -EZ-USB 2100 Series Single-chip principle and application programming. PDF BUAA Press edited From:颜荣Jiang Yin Zhang Daxing余志强

本代码实现4×4键盘操作 对键盘进行扫描取得键入值-Realize the code 4 × 4 keyboard operation of the keyboard type to be scanned to obtain the value of

自制干手机，含电路图（DDB），使用说明以及汇编源程序-Self-made hand dryers, including circuit diagrams (DDB), for use as well as the compilation of source code

C51 串口通信 包括解析报文-C51 Bunches of communication include the message translating

1602液晶模块的显示驱动头文件，可直接调用函数进行字符，字符串的输出，以及各种模式选择，光标快速定位等-1602 LCD display driver header files can be directly call function characters, string output, and a variety of mode selection, cursor positioning, such as rapid

基于AT89C2051单片机控制DS18B20传感器的数字温度计，内有软件仿真-AT89C2051-based single-chip sensor control DS18B20 digital thermometer with a software simulation

利用单片机仿真JTAG测试驱动程序,可做测试烧录等-The use of single-chip JTAG emulation test driver, do the test burn, etc.

采用TOP227单片开关电源芯片实现的充电器，内附电路图-used TOP227 SMPS chip chargers, enclosing circuit

可以对UC1697V的进行连续烧录，并有成功判断标志。-May continuous UC1697V the burn, and to determine signs of success.