右移运算流水点亮P1口8位LED
..........................\ex18
..........................\ex18.LST
..........................\ex18.M51
..........................\ex18.OBJ
..........................\ex18.Opt
..........................\ex18.Uv2
..........................\ex18.c
..........................\ex18.hex
..........................\ex18.lnp
..........................\ex18.plg
..........................\ex18_Opt.Bak
..........................\ex18_Uv2.Bak