man, i think i can download files right for i uploaded 5 files.

针对USB2SPI128芯片的上位机驱动程序的源代码，主要是联通PC机的底层USB驱动和下位机单片机的通讯。-USB2SPI128 chip host computer for the driver source code, mainly to China Unicom PC-bottom USB drive and the next crew microcontroller communications.

数字电压表,可模拟进行电压测量,用数码管显示电压值,有图和程序-Digital voltage meter, can be simulated for voltage measurement, digital display voltage value, a plan and procedures

zlg7290测试程序-zlg7290 test procedures

rc5 decoder for avr microcontrollers

c8051F040单片机中菜单显示，键盘输入例程-menu, keyboard input routines

80C51单片机中利用蜂鸣器实现电子琴的源程序。包含蜂鸣器的datasheet。-80C51 single-chip buzzer realize the use of the source organ. Contains the buzzer datasheet.

a51 令牌通讯-a51 makes the sign communication

运算放大器NE5532的中文资料。有需要的朋友请下载-Op-amp NE5532 Chinese information. Friend in need, please download

基于CY7C68013A的mouse+keyboard混合USB外设应用范例。本套代码基于CY3684开发板，使用多个interface实现复合设备。与之相对的另一种方案是使用多个报表描述符，该方案另行上传。-This project focuses on building a mouse+ keyboard hybrid USB device with the popular Cypress CY7C68013A chip. Implementation is based on a multiple Interface solution. Please refer to CY3684 dev kit documentation for more details regarding hardware platform.