51单片机对lcd1602一些基础程序，下一个任务(用51所有中断源在1602上做个钟)的调试中发现了这个程序的一些小bug 及时改过来了-51 micro lcd1602 some basic procedures, the next task (with 51 in 1602 all the interrupt sources to be a bell) were found in the debugging of this process in time to some small bug