用keil c和vb开发的单片机通用usb键盘，包含固件源码，驱动，调试程序和原理图。对做相关毕业设计的人很有帮助。-with keil c and vb development of the general-purpose usb keyboard includes firmware source code, drivers, Commissioning procedures and drawings. Make relevant to the graduate design helpful.

基于51单片机实现PC键盘功能的程序和原理图-PC keyboard functions based on 51 single-chip implementation procedures and schematics

51USB扩展,适用于51单片机控制USB接口，代码+原理图-51USB extended for 51 single-chip USB interface control, code+ schematic diagram

昨天刚在网上找到一个用51单片机实现的USB读写！！内容完整得不行了！有原理图！PCB图！各种使用信息！测试软件！！强烈顶-Just yesterday the Internet to find a USB Microcontroller with 51 read and write! ! Completeness of the contents have to die! A schematic! PCB plans! A variety of usage information! Test S