keilC51，MCS51上实现GPS，1602C的LCD屏支持

《usb应用开发技术实例详解》，图书配套的源代码。编译环境C++或者KEILC51等环境下。本书2009年4月出版。-public 2009.run with codes of the book

串口通信的源码，利用KEILC51编程，并编译通过，在Proteus软件中仿真，能够实现通信。-It is Serial Communication source code! Use KEILC51 to program, and it has been compiled successfully. It can realize communication in Proteus Simulication.

GPIO模拟UART收发数据，单片机赛元SC91F722，开发环境KEILC51，工程正常运行-Sai Yuan microcontroller GPIO analog UART send and receive data, development environment KEILC51, the normal operation of the project