长春体育馆的比赛软件（LED显示），包括3台机器：用winsock通讯，1个ACCESS DB通过ODBC访问，一台控制机器，一台显示（GDI)-Changchun Coliseum game software (LED), including three machines : protocols of communications, a ACCESS DB ODBC, a control machine, a display (GDI)

C8051F020单片机中断程序 This software shows the necessary configuration to use External Interrupt 0 (/INT0) or External Interrupt 1 (/INT1) as an interrupt source. The code executes the initialization routines and then spins in an infinite while() l

8255 LED 左循环 右循环 闪烁 间隔时间-8255 LED