0――999计数器。在STC89C52单片机下开发的程序,可实现自动0――999计数。-0- 999 counters. At STC89C52 procedures developed under the single-chip microcomputer can automatically achieve 0- 999 counts.
一个用于PC直接写端口及内存的程序,少加修改就可用于pci卡的驱动,完整的工程代码,非常不错-a written directly for the PC port and the memory process, less modification can be used to drive pci cards, and complete code works very well