用8255新片连接输入输出电路,输入设备是一组(8)个开关，输出是一组(8个)LED灯,写程序,在搬动开关时,使LED灯按某种规则变化(自己定义) -8255 with a new film linking the input and output circuit, input equipment is a group (8) switching, Output is a group (8) LED lights, write procedures, the moving of the switch, LED lights to make rules changes according to a (self-defined)