控制台下俄罗斯方块，借助BORLAND图形库，是学习C++基础的好案例-console box, with the help of microcomputer graphics library, learning C is a good case basis

异步通信 UART 51单片机基础上理解串口通信数据收发-Asynchronous communication UART serial communication based on 51 single chip microcomputer to understand data transceiver

利用AT89C51单片机使小车沿着画好的黑线行走-Using AT89C51 single chip microcomputer to make the car walking along the draw good black line