这是USBD12芯片与PC机通讯的单片机固件程序，已调试，能很好工作-This is USBD12 communications chips and PC-MCU firmware procedures have been debugging, good work

usbio通信PC端底层源代码，很适合USB初学者的底层驱动学习，配合VB或VC编写的3灯控制简易程序，使PC界面上的3颗灯或下位机上的3颗LED灯随对应的按键或控件动作而变化。-usbio Communications PC-side underlying source code, well suited to the bottom of USB drive for beginners to learn to cope with VB or VC summary prepared by the

基于USBIO公司的USB2ISP开发板开发的上位机程序，可以实现USB接口转I2C与SPI器件，实现了多种器件(24系列IIC的读写,ADC,MSP430F2013,SPI存储，温度传感器)，实时曲线显示，功能很强大!!1-USBIO' s USB2ISP based development board developed by host computer program, you can achieve the USB interface to switch I2C and SPI d

USBIO口编程，内容详细明了，思路清晰，可供需写USB驱动的参考-USBIO port programming, detailed and clear, clarity of train of thought, can supply and demand to write USB driver reference