知识要点：理解熟悉单片机的逻辑运算

运行结果：P1 口输出结果为01100000,注意1 为灭0 为亮,从1.7 到1.0 排列

ANL 0FH就是把数据与00001111相与那么遇1得原来的数遇0则为0,结果是前面的4位变

0, 后面的4 位保留-knowledge points : understanding the logic familiar with the MCU running Operational Results : P1 output to 01.1 million, for the attention of an anti-0. from 1.7 to 1.0 with ANL 0FH data is 00001111 and then phase in the case of an original few were 0 0 encountered, the results of the previous four variable 0, behind the four reservations